Presentations and other professional materials

Maher A. Abbas, MD
Compassion, Excellence, Integrity

Diplomate, American Board of Surgery

Diplomate, American Board of Colon and Rectal Surgery

Fellow, American College of Surgeons

Fellow, American Society of Colon and Rectal Surgeons

Honorary Fellow, Philippine Society of Colon and Rectal Surgeons

Honorary Member, Surgical Section Serbian Medical Association

“The best interest of the patient is the only interest to be considered…” W.J. Mayo, MD (Founder of the Mayo Clinic)

 

Dr. Maher Abbas is an American Board Certified Colon and Rectal Surgeon who performs the latest and most advanced procedures to treat conditions affecting the small intestine, colon, rectum, and anus.  He is a leader in minimally invasive and endoscopic surgery. With over 18,000 operations and procedures experience, he provides state of the art treatment to his patients.

 

Contents – Click for details

Video Presentations
Scientific Publications

Books
Articles
Abstracts
Letters to the editor / Invited Editorials
Scientific Presentations
Oral presentations
Poster presentations
Invited Lectures
International
United States: Local – Regional – National
Meet The Professor Session
Academic Honors and Professional Awards

Video Presentations

  1. Abbas MA, Aboseif S. Gracilis muscle interposition flap for radiation induced rectourethral fistula.  Mayo Clinic Priestley Surgical Society Meeting, Chicago, Illinois (2006)
  2. Abbas MA, Kaminski A, Miyazaki F. Perineal reconstruction of traumatic cloaca.  American College of Surgeons 92nd Annual Clinical Congress, Chicago, Illinois (2006)
  3. Aboseif S, Lesser TF, Abbas MA. Repair of radiation-induced rectourethral fistula using buccal mucosa urethral onlay graft and gracilis interposition flap.  American Urologic Association, Western Section Meeting, Maui, Hawaii (2006)
  4. Aboseif S, Abbas MA. Gracilis interposition flap for rectourethral fistula.  Pan Arab Continence Society, Bahrain (2006) [1st award for best video presentation]
  5. Aboseif S, Abbas MA, Lesser TF. Repair of radiation-induced rectourethral fistula using buccal mucosa urethral onlay graft and gracilis interposition flap.  American Urology Association, Anaheim, California (2007)
  6. Abbas MA. Perineal reconstruction.  American Society of Colon and Rectal Surgeons Annual Meeting, St. Louis, Missouri (2007)
  7. Abbas MA, Aboseif S. Repair of radiation-induced rectourethral fistula using buccal mucosa urethral onlay graft and gracilis interposition flap.  American Society of Colon and Rectal Surgeons Annual Meeting, St. Louis, Missouri (2007)
  8. Abbas MA, Kaminski A, Miyazaki F. Reconstruction after perineal trauma.  Contemporary Surgery [web video 63(6):273] (2007)
  9. Abbas MA, Aboseif S. Repair of rectourethral fistula with gracilis flap and urethral reconstruction with buccal mucosal flap.  American College of Surgeons Annual Meeting, New Orleans, Louisiana (2007)
  10. Blumberg JM, Kim DH, Abbas MA, Aboseif SR. Use of a dartos flap for rectourethral fistula repair with a combined perineal and transanal approach.  Western Section, American Urologic Association, Monterey, California (2008)
  11. Abbas MA. Components separation for abdominal wall defects.  The 20th Annual Colorectal Disease Symposium, Fort Lauderdale, Florida (2009)
  12. Abbas MA. Endoscopic stenting of malignant colorectal obstruction.  American Society of Colon and Rectal Surgeons Annual Meeting, Hollywood, Florida (2009)
  13. Abbas MA. Laparoscopic repair of post-abdominoperineal resection perineal hernia.  American Society of Colon and Rectal Surgeons Annual Meeting, Hollywood, Florida (2009)
  14. Abbas MA. Components separation for abdominal wall defects.  American College of Surgeons 95th Annual Clinical Congress, Chicago, Illinois (2009)
  15. Abbas MA. Components separation for contaminated abdominal wall defects.  7th annual congress of the Association of Coloproctology of Hungary, Debrecen, Hungary (2009)
  16. Abbas MA. Laparoscopic repair of post-abdominoperineal resection perineal hernia.  American College of Surgeons 95th Annual Clinical Congress, Chicago, Illinois (2009)
  17. Abbas MA. Laparoscopic repair of perineal hernia.  4th Pancevo Coloproctology Workshop, Society of Coloproctology of Yugoslavia, Pancevo, Serbia (2011)
  18. Abbas MA. Transperineal repair of rectourethral fistula.  4th Pancevo Coloproctology Workshop, Society of Coloproctology of Yugoslavia, Pancevo, Serbia (2011)
  19. Abbas MA, Penn A, Fernandez J. Components separation for abdominal wall defect with multiple enteroatmospheric fistulae.  American Society of Colon and Rectal Surgeons annual meeting, Vancouver BC, Canada (2011)
  20. Abbas MA. Laparoscopic anterior resection for colovaginal fistula.  American College of Surgeons 97th Annual Clinical Congress, San Francisco, California (2011)
  21. Abbas MA. Laparoscopic left hemicolectomy.  Nuts and Bolts of Laparoscopy Symposium.  American Society of Colon and Rectal Surgeons Annual Meeting, Phoenix, Arizona (2013)
  22. Abbas MA. Laparoscopic transabdominal and paracoccygeal resection of pelvic teratoma.  American Society of Colon and Rectal Surgeons Annual Meeting, Phoenix, Arizona (2013)
  23. Abbas MA. Laparoscopic anterior resection for colovaginal fistula.  American Society of Colon and Rectal Surgeons Annual Meeting, Phoenix, Arizona (2013)
  24. Kao KT, Abbas MA. Colonic stenting.  SAGES Cine-Med Advanced Endoscopy Project (2013)
  25. Moon D, Sydorak R, Abbas MA. Laparoscopic Ladd procedure and right hemicolectomy for malrotation and colon cancer.  American Society of Colon and Rectal Surgeons Annual Meeting, Hollywood, Florida (2014)
  26. Moon D, Attaluri V, Abbas MA. Robotic and laparoscopic assisted sigmoidectomy for chronic diverticulitis and colovesical fistula.  American College of Surgeons 100th Annual Clinical Congress, San Francisco, California (2014)
  27. Abbas MA. Laparoscopic transabdominal and paracoccygeal resection of pelvic teratoma. American College of Surgeons 100th Annual Clinical Congress, San Francisco, California (2014)
  28. Wong A, Isik O, Abbas MA, Gorgun E. Laparoscopic assisted endoscopic full-thickness resection (EFTR) of colon lesion.  American College of Surgeons 100th Annual Clinical Congress, San Francisco, California (2014)
  29. Abbas MA. Colonic stenting. International Colorectal Disease Symposium, 26th Jagelman/36th Turnbull, Fort Lauderdale, Florida (2015)
  30. Wong A, Gorgun E, Haber GP, Abbas MA. Laparoscopic repair of ureteric injury: psoas hitch with ureteric reimplantation.  American Society of Colon and Rectal Surgeons Annual Meeting, Boston, Massachusetts (2015)
  31. Al-Khatib A, Santoro GA, Abbas MA. Endoscopic stenting of rectosigmoid cancer.  American Society of Colon and Rectal Surgeons Annual Meeting, Boston, Massachusetts (2015)
  32. Moon D, Tran T, Akmal Y, McClemore E, Gorgun E, Abbas MA. Management of intraoperative bleeding during robotic colorectal surgery.  American College of Surgeons 101st Annual Clinical Congress, Chicago, Illinois (2015)
  33. Moon D, Attaluri V, Abbas MA. Robotic and laparoscopic sigmoid colectomy for colovaginal fistula.  American College of Surgeons 102nd Annual Clinical Congress, Washington, DC (2016)
  34. Moon D, Attaluri V, Abbas MA. Colostomy takedown and laparoscopic sigmoidectomy for diverticular stricture with enterocolic and colovesical fistulas.   American College of Surgeons 103rd Annual Clinical Congress, San Diego, California (2017)
  35. Abbas MA, Aboseif S. Repair of rectourethral fistula with gracilis flap and urethral reconstruction with buccal mucosal flap. Highlights from ACS Video Library I Video Session. American College of Surgeons 104th Annual Clinical Congress, Boston, Massachusetts (2018)
  36. Abbas MA, Darr H, Oner M. Endoscopic management of anastomotic stricture. American Society of Colon and Rectal Surgeons Annual Meeting, Boston, Massachusetts (2020) [virtual meeting]
  37. Abbas MA, Darr H, Oner M. Myomectomy for Hirschsprung’s disease in adolescents. American Society of Colon and Rectal Surgeons Annual Meeting, Boston, Massachusetts (2020) [virtual meeting]
  38. Abbas MA, Oner M, Darr H. Laparoscopic excision of small bowel mesenteric cyst. American Society of Colon and Rectal Surgeons Annual Meeting, Boston, Massachusetts (2020) [virtual meeting]
  39. Abbas MA, Oner M, Darr H. Laparoscopic excision of symptomatic urachal cyst. American College of Surgeons 106th Annual Clinical Congress, Chicago, Illinois (2020)
  40. Abbas MA, Oner M. Laparoscopic excision of appendix mucocele. American Society of Colon and Rectal Surgeons Annual Meeting, San Diego, California (2021) [virtual meeting]
  41. Abbas MA, Darr H, Oner M. Myomectomy for Hirschsprung’s disease in adolescents. 57th Mastery in Surgery Annual Convention. Resolving controversies in colorectal surgery through experience, expertise, and evidence. University of Philippines and Philippine General Hospital, Manila, Philippines (2021) [Virtual meeting]
  42. Abbas MA, Oner M, Darr H. Laparoscopic excision of small bowel mesenteric cyst. 57th Mastery in Surgery Annual Convention. Resolving controversies in colorectal surgery through experience, expertise, and evidence. University of Philippines and Philippine General Hospital, Manila, Philippines (2021) [virtual meeting]
  43. Abbas MA, Oner M. Laparoscopic ACE procedure for chronic constipation refractory to medical therapy. 1st Turkish International Colorectal Surgery Congress, XVIIIth Turkish Colon and Rectal Surgery Congress, XIth Colorectal Surgery Nursing Congress, Antalya, Turkey (2021)
  44. Abbas MA, Oner M. Anal abscess drainage: The basics 101. 1st Turkish International Colorectal Surgery Congress, XVIIIth Turkish Colon and Rectal Surgery Congress, XIth Colorectal Surgery Nursing Congress, Antalya, Turkey (2021)
  45. Abbas MA, Oner M. Endoscopic stent decompression of malignant rectal obstruction. 1st Turkish International Colorectal Surgery Congress, XVIIIth Turkish Colon and Rectal Surgery Congress, XIth Colorectal Surgery Nursing Congress, Antalya, Turkey (2021)
  46. Abbas MA, Darr H, Oner M. Myomectomy for Hirschsprung’s disease in adolescents. 1st Turkish International Colorectal Surgery Congress, XVIIIth Turkish Colon and Rectal Surgery Congress, XIth Colorectal Surgery Nursing Congress, Antalya, Turkey (2021)

Last update August 12, 2022

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Scientific Publications

Book Chapters

  1. Stone WM, Abbas MA. Visceral arterial aneurysms.  Mayo Clinic Gastrointestinal Surgery, editors: Kelly KA, Sarr MG, Hinder R.  Harcourt Brace Co, 1st edition, 2003
  2. Shen B, Soffer EE, Abbas MA, Wexner S. Irritable bowel syndrome, functional bowel disease, and constipation.  Surgical Directives:  The Cleveland Clinic Practice of Colorectal Surgery, editor: Delaney CP.  Lippincott, Williams, & Wilkins, 1st edition, 2006
  3. Rao A, Abbas MA. Current clinical trials in radiotherapy for colorectal cancer.  Coloproctology, editors: Zbar AP, Wexner SD.  Springer-Verlag, 1st edition, 2011
  4. Abbas MA. Laparoscopic total proctocolectomy with ileoanal reservoir and ileoanal anastomosis.  Operative Dictations in General and Vascular Surgery, editors: Hoballah JJ, Scott-Conner EH.  Elsevier, 2nd edition, 2011
  5. Abbas MA. Laparoscopic total proctocolectomy with ileostomy.  Operative Dictations in General and Vascular Surgery, editors: Hoballah JJ, Scott-Conner EH.  Elsevier, 2nd edition, 2011
  6. Abbas MA. Laparoscopic closure of Hartmann’s Procedure.  Operative Dictations in General and Vascular Surgery, editors: Hoballah JJ, Scott-Conner EH.  Elsevier, 2nd edition, 2011
  7. Abbas MA. Laparoscopic subtotal colectomy with ileostomy and Hartmann’s Pouch.  Operative Dictations in General and Vascular Surgery, editors: Hoballah JJ, Scott-Conner EH.  Elsevier, 2nd edition, 2011
  8. Abbas MA, Sherman M. Endorectal advancement flap.  Master Techniques in Colon and Rectal Surgery: Anorectal Operations, editors: Fleshman J, Wexner SD.  Lippincott Williams & Wilkins, 1st edition, 2012
  9. Madbouly K, Abbas MA.  Complex colorectal fistulas. Colorectal Surgery, editors: Bailey R, Billingham R, Stamos M, Snyder M.  Elsevier, 1st edition, 2012
  10. Abbass MA, Abbas MA. Causes of operative failure.  Anal Fistula: Principles and Management, editor: Abcarian H.  Springer, 1st edition, 2014
  11. Hines J, Pickhardt PJ, Grendell J, Modayil R, Abbas MA, Katz DS. Imaging the colon: tough lessons from peer review.  The Radiology M & M Meeting: Misinterpretations, Misses and Mimics: Categorical Course, editors: Kruskal JB, Sandrasegaran K, Siewert B. Leesburg, Virginia: American Roentgen Ray Society, 2014
  12. Santoro G, Abbas MA. Echographic diagnosis of childbirth-related pelvic floor injuries. Childbirth-Related Pelvic Floor Dysfunction, editors: Riva M, Minini G. Springer, 1st edition, 2015
  13. Santoro G, Abbas MA. Complex fistulas.  The ASCRS Textbook of Colon and Rectal Surgery, editors: Steele S, Hull T, Read T, Saclarides T, Senagore A, Whitlow C.  Springer, 3rd edition, 2015
  14. Sidani S, Abbas MA. Rectal cancer: management of the patient with rectal cancer presenting with synchronous liver metastases. Difficult Decisions in Colorectal Surgery – an Evidence Based Approach, editors: Hyman N, Umanskiy K.  Springer, 1st edition, 2016
  15. Lackberg Z, Abbas MA. Endoluminal colorectal stenting.  Advanced Colonoscopy and Endoluminal Surgery, editors: Lee S, Ross H, Rivadeneira D, Steele S, Feingold D.  Springer, 1st edition, 2017
  16. Abbas MA, Sherman M. Endorectal advancement flap.  Master Techniques in Colon and Rectal Surgery: Anorectal Operations, editors: Fleshman J, Wexner SD.  Wolters Kluwer, 2nd edition, 2017
  17. Sidani S, Abbas MA. Anal stenosis and stricture.  Clinical Decision Making in Colorectal Surgery, editors:  Maykel JA, Wexner SD, Steele SR.  Springer, 2nd edition, 2017
  18. Tabaja L, Akmal Y, Abbas MA. Colon cancer surgical therapy.  Clinical Decision Making in Colorectal Surgery, editors: Maykel JA, Wexner SD, Steele SR.  Springer, 2nd edition, 2017
  19. Halabi W, Abbas MA. Enteral stents in the Treatment of Colonic Obstruction. Current Surgical Therapy, editors: Cameron JL, Cameron AM. Elsevier, 13th edition, 2019
  20. Reickert CA, Abbas MA. Infectious Colitides. The ASCRS Textbook of Colon and Rectal Surgery, editors: Steele SR, Hull TL, Hyman NH, Maykel JA, Read TE. Springer, 4th edition, 2020
  21. Abbas MA. Fistulectomy. Coloproctology: Anal Fistula and Abscess, editors: Ratto C, Parello A, Litta F, De Simone V, Campenni P. Springer, 1st edition, 2021

Last update August 12, 2022

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Books

  1. Abbas MA, Spiegl MJ. The Mediterranean diet:  olive oil cookery.  The Book Publishing Company 1995  (ISBN 0-913990-11-6)
  2. Abbas MA, Adame DD, Gylfadottir UK. College students on the go: introduction to healthy living.  Simon & Schuster 1996  (ISBN 0-536-59261-6)
  3. Holmin DA, Abbas MA. From the tables of Lebanon.  The Book Publishing Company 1997 (ISBN 1-57067-040-4)
  4. Abbas MA, Spiegl MJ. La Cocina Mediterrànea: El Aceite de Oliva Recetas.  Editorial Diana 1999 (ISBN 968-13-3121-4) [Spanish edition, Mexico]
  5. Holmin DA, Abbas MA. Recettes Végétariennes du Liban.  Editions La Plage 2005 (ISBN 2-84221-124-3, ISSN 1769-2598) [French Edition, France]

Last update August 12, 2022

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Articles

  1. Boothe RG, Quick MW, Joose MV, Abbas MA, Anderson DC. Accessory lateral rectus orbital geometry in normal and naturally strabismic monkeys.  Investigative Ophthalmology and Visual Sciences 1990;31(6):1168-1174
  2. Adame DD, Johnson TC, Cole SP, Matthiasson H, Abbas MA. Physical fitness relation to amount of physical exercise, body image, and locus of control among college men and women.  Perceptual and Motor Skills 1990;70:1347-1350
  3. Adame DD, Frank RE, Serdulla MK, Cole SP, Abbas MA. The relationship of self-perceived weight to actual weight, body image and health behaviors of college freshmen.  Wellness Perspectives:  Research, Theory and Practice 1990;7(1):31-40
  4. Adame DD, Taylor ME, Wang MQ, Abbas MA. Southern college freshman students: a survey of knowledge, attitudes, and beliefs about AIDS.  Journal of Sex Education and Therapy 1991;17(3):196-206
  5. Fischell TA, Abbas MA, Grant GW, Siegel RJ. Ultrasonic energy: effects on vascular function and integrity.  Circulation 1991;84:1783-1795
  6. Abbas MA, Stadius ML, Afshari AA, Kernoff RS, Fischell TA. Effect of external beam irradiation on neointimal and medial hyperplasia following balloon angioplasty.  International Journal of Cardiology 1994;44:191-202
  7. Abbas MA, Katz DS, Sommer FG. CT findings of primary osteosarcoma of the bladder.  American Journal of Roentgenology 1996;167(2):535-536
  8. Abbas MA, Birdwell R, Katz DS, Chang H, Ostrow K. Primary lymphoma of the cervix in a heart-transplant patient.  American Journal of Roentgenology 1996;167(5):1136-1138
  9. Abbas MA, Petersen J, Katz DS, Eller D. Hepatic Calcification associated with continuous ambulatory peritoneal dialysis.  American Journal of Roentgenology 1996;167(6):1592-1593
  10. Milki AA, Fisch JD, Ortiz BH, Abbas MA. Obstructed hemivagina with uterus didelphys:  a case report and MRI findings.  Fertility and Sterility 1998;70(1S):49S
  11. Abbas MA, Mulligan DC, Ramzan NN, Blair JE, Smilack JD, Shapiro MS, Lidner TK, Olden KW. Colonic perforation in unsuspected amebic colitis.  Digestive Diseases and Sciences 2000;45(9):1836-1841
  12. Abbas MA, Collins JM, Mulligan DC. Renal cell carcinoma metastatic to pancreas.  The American Journal of Surgery 2001;182(2):183-184
  13. Abbas MA, Collins JM, Olden KW, Kelly KA. Spontaneous intramural small bowel hematoma: clinical presentation and long-term outcome.  Archives of Surgery 2002;137:306-310
  14. Stone WM, Abbas MA, Cherry KJ, Fowl RJ, Gloviczki P. Superior mesenteric artery aneurysms: is presence an indication for intervention?  Journal of Vascular Surgery 2002;36(2):234-237
  15. Stone WM, Abbas MA, Gloviczki P, Fowl RJ, Cherry KJ. Celiac artery aneurysms: a critical reappraisal.  Archives of Surgery 2002;137:670-674
  16. Abbas MA, Stone WM, Fowl RJ, Gloviczki P, Oldenburg WA, Pairlero PC, Hallett JW, Bower TC, Panneton JM, Cherry KJ. Splenic artery aneurysms: two decades experience at the Mayo Clinic.  Annals of Vascular Surgery 2002;16(4):442-449
  17. Abbas MA, Olden KW, Collins JM. Spontaneous intramural small bowel hematoma:  imaging findings and outcome.  American Journal of Roentgenology 2002;179:1389-1394
  18. Peter SD, Abbas MA, Leslie K, Heppell J. Portal venous air with fulminant clostridium difficile colitis.  Contemporary Surgery 2002
  19. Tessier DJ, Abbas MA, Fowl RJ, Stone WM, Bower TC, Mckusick MA, Gloviczki P. Management of rare mesenteric arterial branch aneurysms.  Annals of Vascular Surgery 2002;16(5):586-590
  20. Peter SD, Abbas MA, Kelly KA. The spectrum of pneumatosis intestinalis.  Archives of Surgery 2003;138:68-75
  21. Tessier DJ, Fowl RJ, Stone WM, McKusick MA, Abbas MA, Sarr MG, Nagorney DM, Cherry KJ, Gloviczki P. Iatrogenic hepatic artery pseudoaneurysms:  an uncommon complication after hepatic, biliary, and pancreatic procedures.  Annals of Vascular Surgery 2003;17(6):663-669
  22. Abbas MA, Fowl RJ, Stone WM, Panneton JM, Oldenburg WA, Bower TC, Cherry KJ, Gloviczki P. Hepatic artery aneurysms: factors predicting complications.  Journal Vascular surgery 2003;38(1):41-45
  23. Tessier DJ, Stone WM, Fowl RJ, Abbas MA, Andrews JC, Bower TC, Gloviczki P. Clinical features and management of splenic artery pseudoaneurysms: case series and cumulative review of the literature.  Journal of Vascular Surgery 2003;38:969-974
  24. Yousfi MM, Jackson NS, Abbas MA, Zimmerman RS, Fleischer DE. Bowel perforation complicating ventriculoperitoneal shunt.  Gastrointestinal Endoscopy 2003;58(1):144-148
  25. Kim N, Reed WP Jr, Abbas MA, Katz DS. CT identification of abscesses after dropped appendicoliths during laparoscopic appendectomy.  American Journal of Roentgenology 2004;182:1203-1205
  26. Broderick-Villa G, Burchette RJ, Collins JC, Abbas MA, Haigh PI. Hospitalization for acute diverticulitis does not mandate elective colectomy.  Archives of Surgery 2005;140:576-583
  27. Tejirian T, Abbas MA. Sitz bath:  where is the evidence?  Diseases of Colon and Rectum 2005;48(12):2336-2340
  28. Tejirian T, Abbas MA. Bacterial endocarditis and septic emboli following rubber band ligation.  Diseases of Colon and Rectum 2006;49:1931-1933
  29. Villalba H, Abbas MA. Hemorrhoids: modern remedies for an ancient disease.  The Permanente Journal 2007;11(2):45-47
  30. Tejirian T, Lee JJ, Abbas MA. Is wide local excision for pilonidal disease still justified?  The American Surgeon 2007;73;1075-1078
  31. Singh HM, Teller T, Esrason KT, Abbas MA. VIPoma: a rare cause of acute diarrhea.  Surgical Rounds 2007;30(9):414-419
  32. Villalba H, Villalba S, Abbas MA. Anal fissure: a common cause of anal pain.  The Permanente Journal 2007;11(4):62-65
  33. Tejirian T, Kaminski A, Abbas MA. Intraabdominal erosion of artificial bowel sphincter reservoir.  International Journal of Colorectal Disease 2007;22(7):849-850
  34. Abbas MA, Falls GN. Endoscopic stenting of colovaginal fistula: the transanal and transvaginal “kissing” wire technique.  Journal of the Society of Laparoendoscopic Surgeons 2008;12(1):88-92
  35. Sassani P, Singh HM, Gerety D, Abbas MA. Giant colonic diverticulum: endoscopic, imaging, and histopathologic findings.  The Permanente Journal 2008;12(1):43-45
  36. Lawes DA, JE Efron, Abbas MA, Tejirian T, Hamadani A, Young-Fadok TM, Heppell J. Early experience with the bioabsorbable anal fistula plug.  World Journal of Surgery 2008;32:1157-1159
  37. Weisman N, Abbas MA. Can pre-operative anal ultrasound predict surgical outcome for fistula-in-ano?  Diseases of Colon and Rectum 2008;51(7):1089-92
  38. Puapong DP, Goldhardt R, Lentz R, Abbas MA. Invasive ductal breast carcinoma metastatic to the rectum.  Surgical Rounds 2008;31(1):39-42
  39. Abbas MA, Tejirian T. Laparoscopic stoma formation.  Journal of the Society of Laparoendoscopic Surgeons 2008;12:159-161
  40. Lesser T, Aboseif SR, Abbas MA. Combined endorectal advancement flap with Alloderm® graft for radiation and cryoablation induced rectourethral fistula.  The American Surgeon 2008;74(4);341-345
  41. Abbas MA. Sphincter Preservation for distal rectal cancer:  how far is too far?  The American Journal of Clinical Oncology 2008;31(2):195-198
  42. Abbas MA, Falls GN. Transanal endoscopic drainage of abdominopelvic sepsis. Journal of the Society of Laparoendoscopic Surgeons 2008;12(3):347-350
  43. Puapong D, Lee SL, Radner G, Tsai PI, Katz D, Abbas MA, Applebaum H. Selective CT scan criteria for safe enema reduction of prolonged intussusception in children.  The Permanente Journal 2008;12(3):22-24
  44. Lee SL, Tejirian T, Abbas MA. Current management of adolescent pilonidal disease.  Journal of Pediatric Surgery 2008;43(6):1128-33
  45. Swanstrom LL, Khajanchee Y, Abbas MA. Natural Orifice Transluminal Endoscopic Surgery (NOTES): the future of GI surgery.  The Permanente Journal 2008;12(2):42-47
  46. Abbas MA, Lemus-Rangel R, Hamadani A. Long-term outcome of endorectal advancement flap for complex anorectal fistulae.  The American Surgeon 2008;74(10):921-924
  47. Shabatian H, Lee DJ, Abbas MA. Components separation: a solution to complex abdominal wall defects.  The American Surgeon 2008;74(10):912-916
  48. Katz DS, Yam B, Hines JJ, Mazzie JP, Lane MJ, Abbas MA. Uncommon and unusual gastrointestinal causes of the acute abdomen: CT diagnosis.  Seminars in Ultrasound, CT, & MRI 2008;29(5):386-398
  49. Nguyen N, Yegiyants S, Kaloostian C, Abbas MA, DiFronzo LA. The surgical care improvement project (SCIP) initiative to reduce infection in elective colorectal surgery: which performance measures affect outcome?  The American Surgeon 2008;74(10);1012-1016
  50. Hamadani A, Haigh PI, Liu IA, Abbas MA. Who is at risk for developing chronic anal fistula or recurrent anal sepsis after initial perianal abscess?  Diseases of Colon and Rectum 2009; 52(2):217-221
  51. Blumberg JM, Lesser T, Tran VQ, Aboseif SR, Bellman GC, Abbas MA. Management of rectal injuries sustained during laparoscopic radical prostatectomy.  Urology 2009;73(1):163-166
  52. Chien G, Abbas MA. Developing minimally invasive surgery centers within Kaiser Permanente: the integrated multidisciplinary model of Los Angeles.  The Permanente Journal 2009;13(2):20-29
  53. Rayhanabad J, Sassani P, Abbas MA. Laparoscopic repair of perineal hernia.  Journal of the Society of Laparoendoscopic Surgeons 2009;13(2):237-241
  54. Etzioni DA, Abbas MA. Biostatistics 101 – Understanding data.  The Permanente Journal 2009;13(3):90-91
  55. Aivaz O, Rayhanabad JA, Nguyen V, Haigh PI, Abbas MA. Outcome of lateral internal sphincterotomy versus Botulinum Toxin A with fissurectomy for chronic anal fissure.  The American Surgeon 2009;75(10):925-928
  56. Abbas MA. Endoscopic management of acute colorectal anastomotic complications using temporary stent.  Journal of the Society of Laparoendoscopic Surgeons 2009;13(3):420-424
  57. Rayhanabad JA, Abbas MA. Long-term outcome of endoscopic stenting for benign and malignant colorectal disorders.  The American Surgeon 2009;75(10):897-900
  58. Kao K, Tam M, Sekhon H, Wijeratne RX, Haigh PI, Abbas MA. Should barium enema be the next step following incomplete colonoscopy?  International Journal of Colorectal Disease 2010;25:1353-1357
  59. Etzioni DA, Cannom RR, Chiu V, Burchette RJ, Haigh PI, Abbas MA. Outpatient treatment of acute diverticulitis:  rates and predictors of success.  Diseases of Colon and Rectum 2010;53(6):861-865
  60. Hwang S, Cannom RR, Abbas MA, Etzioni D. Diverticulitis in immunosuppressed patients: a systematic review.  Diseases of Colon and Rectum 2010;53(12):1699-1707
  61. Murdock J, Abbas MA. Laparoscopic abdomino-paracoccygeal resection of anorectal cystic teratoma.  Journal of the Society of Laparoendoscopic Surgeons 2010;14(4):583-586
  62. Kamrava A, Katz D, Abbas MA. Infralevator leiomyoma.  Techniques in Coloproctology 2011;15(1):127-128
  63. Kao K, Giap A, Abbas MA. Is endoscopic excision of large colorectal polyps a viable alternative to surgical resection?  Archives of Surgery 2011;146(6):690-696
  64. Regadas FS, Haas EM, Abbas MA, Jorge M, Habr-Gama A, Sands D, Wexner SD, Melo-Amaral I, Sardiñas C, Lima DM, Sagae EU, Murad-Regadas SM. Prospective Multicenter Trial Comparing Echodefecography with Defecography in the Assessment of Anorectal Dysfunction in Patients with Obstructed Defecation.  Diseases of Colon and Rectum 2011;54(6):686-692
  65. Abbas MA. Wide local excision for Buschke-Lowenstein tumor or circumferential carcinoma-in-situ.  Techniques in Coloproctology 2011;15(3):313-318
  66. Abbas MA, Jackson C, Haigh PI. Predictors of outcome for anal fistula surgery.  Archives of Surgery 2011;146(9):1011-1016
  67. Chun L, Abbas MA. Rectourethral fistula following laparoscopic radical prostatectomy.  Techniques in Coloproctology 2011;15(3):297-300
  68. Chun L, Tam M, Haigh PI, Abbas MA. Defunctioning loop ileostomy: a double-edged sword?  Diseases of Colon and Rectum 2012;55(2):167-174
  69. Yegiyants S, Tam M, Lee DJ, Abbas MA. Components separation for clean versus contaminated abdominal wall defects.  Hernia 2012;16(1):41-45 
  70. Kunitake H, Abbas MA. Transanal endoscopic microsurgery for rectal tumors.  The Permanente Journal 2012;16(2):45-50
  71. Abbas MA, Tam MS, Chun LJ. Radiofrequency treatment for fecal incontinence: is it effective long-term? Diseases of Colon and Rectum 2012;55(5):605-610
  72. Cheng D, Sekhon H, Toutounjian R, Abbas MA. Heterotopic gastric mucosa of the rectum associated with anal ulcer.  Techniques in Coloproctology 2012;16(2):167-168
  73. Yeh J, Hastings J, Rao A, Abbas MA. Squamous cell carcinoma of the rectum: a retrospective review of a single institution experience.  Techniques in Coloproctology 2012;16(5):349-354
  74. Abbas MA, Cannom RR, Chiu VY, Burchette RJ, Radner G, Haigh PI, Etzioni DA. Triage of patients with acute diverticulitis: are some inpatient candidates for outpatient treatment?  Colorectal Disease 2013;15(4):451-457
  75. Tam MS, Abbas MA. Perforation following colorectal endoscopy: what happens beyond the endoscopy suite?  The Permanente Journal 2013;17(2):17-21
  76. Wong JT, Abbas MA. Laparoscopic right hemicolectomy:  how I do it.   Techniques in Coloproctology 2013;17(1):S3-S9
  77. Flug JA, Garnet DJ, Widmer J, Stavropoulos S, Gidwaney R, Katz DS, Abbas MA. Advanced gastrointestinal endoscopic procedures: indications, imaging findings, and implications for the radiologist.  Journal of Clinical Imaging 2013;37(4):624-630
  78. Wang JY, Abbas MA. Management of fecal incontinence, from the office to the operating room.  The Permanente Journal 2013;17(3):65-77
  79. Cheng AW, Abbas MA, Tejirian T. Outcome of abdominal wall hernia repair with Permacol TM biologic mesh.  The American Surgeon 2013;79(10):992-996
  80. Abbass MA, Tsay AT, Abbas MA.  Laparoscopic resection of chronic sigmoid diverticulitis with fistula.  Journal of the Society of Laparoendoscopic Surgeons 2013;17(4):636-640
  81. Dietz DW; Consortium for Optimizing Surgical Treatment of Rectal Cancer (OSTRiCh). Multidisciplinary management of rectal cancer: the OSTRICH.  Journal of Gastrointestinal Surgery 2013;17(10):1863-1868
  82. Abbas MA, Chang GJ, Read TE, Rothenberger DA, Garcia-Aguilar J, Peters W, Monson JR, Sharma A, Dietz DW, Madoff RD, Fleshman JW, Greene FL, Wexner SD, Remzi FH; Consortium for Optimizing Surgical Treatment of Rectal Cancer. Optimizing rectal cancer management: analysis of current evidence. Diseases of Colon and Rectum 2014;57(2):252-259
  83. Tam MS, Abbass MA, Tsay AT, Abbas MA. Outcome of colonic fistula surgery in the modern surgical era.  Techniques in Coloproctology 2014;18(5):467-472
  84. Neale JA, Reickert C, Swartz A, Reddy S, Abbas MA, Rubinfeld I. Accuracy of the NSQIP model in predicting morbidity in the colectomy population.  The Permanente Journal 2014;18(1):14-18
  85. Daly B, Lu M, Pickhardt PJ, Menias CO, Abbas MA, Katz DS. Complications of optical colonoscopy: CT findings.  Radiologic Clinics of North America 2014;52(5):1087-1099
  86. Tam MS, Abbass MA, Abbas MA. Robotic-laparoscopic rectal cancer excision versus traditional laparoscopy.  Journal of the Society of Laparoendoscopic Surgeons 2014;18(3):e2014.00020
  87. Cheng AW, Abbas MA, Tejirian T. Outcome of abdominal wall hernia repair with Permacol TM Strattice TM.  The American Surgeon 2014;80(10):999-1002
  88. Monson JR, Probst CP, Wexner SD, Remzi FH, Fleshman JW, Garcia-Aguilar J, Chang GJ, Dietz DW, Consortium for Optimizing the Treatment of Rectal Cancer (OSTRich). Failure of evidence-based cancer care in the United States: the association between rectal cancer treatment, cancer center volume, and geography.  Annals of Surgery 2014;260(4):625-631
  89. Rezvan A, Jakus-Waldman S, Abbas MA, Yazdany T, Nguyen JN. Review of the diagnosis, management and treatment of fecal incontinence.  Female pelvic medicine and reconstructive surgery 2015;21(1):8-17
  90. Keller DS, Aboseif SR, Lesser T, Abbass MA, Tsay AT, Abbas MA. Algorithm based multidisciplinary team treatment approach to rectourethral fistula.  International Journal of Colorectal Disease 2015;30:631-638
  91. Elliott P, McLemore EC, Abbass M, Abbas MA. Robotic versus laparoscopic resection for sigmoid diverticulitis with fistula.  Journal of Robotic Surgery 2015; 2015;9(2):137-142
  92. Klaristenfeld D, Mclemore E, Bonnie L, Abbass M, Abbas MA. Significant reduction in the incidence of small bowel obstruction and ventral hernia after laparoscopic compared to open segmental colorectal resection.   Archives of Surgery 2015;400(4):505-512
  93. Aytac E, Gorgun E, Erem HH, Abbas MA, Hull TL, Remzi FH. Long-term outcomes after circular stapled hemorrhoidopexy versus Ferguson hemorrhoidectomy.  Techniques in Coloproctology 2015;19(10):653-658
  94. Rickles AS, Dietz DW, Wexner SD, Berho ME, Chang GJ, Remzi FH, Greene FL, Fleshman JW, Abbas MA, Peters W, Noyes K, Monson JR, Fleming FJ, on Behalf of The Consortium for Optimizing the Treatment of Rectal Cancer (OSTRiCh). High rate of positive circumferential resection margins following rectal cancer surgery: a call to action.  Annals of Surgery 2015; 262(6):891-898
  95. Fleshman J, Branda M, Sargent D, Bolner AM, Virgilio G, Abbas MA, Peters W, Maun D, Chang G, Herline A, Fichera A, Mutch M, Davis D, Wexner S, Whiteford M, Marks M, Phang T, Stocchi L, McCormick J, Bergamaschi R, Birnbaum B, Marcet J, Margolin D, Larson D, Marcello P, Young-Fadok T, Posner M, Read R, Monson J, Wren S, Pister P, Nelson H. A Phase III Prospective Randomized Trial Comparing Laparoscopic–assisted Resection versus Open Resection of Rectal Cancer: ACOSG Z6051.  Journal of American Medical Association 2015;314(13):1346-1355
  96. Isik O, Aytac E, Brainard J, Valente M, Abbas MA, Gorgun E. Perianal Paget’s disease: a single institution three decades experience.  International Journal of Colorectal Disease 2016;31(1):29-34
  97. Al-Khatib AA, Santoro GA, Gorgun E, Abbas MA. Diagnostic vaginoscopy with colonoscopy: a diagnostic technique for colovaginal fistula assessment.  Colorectal Disease 2016;18(5):483-487
  98. Rencuzogullari A, Gorgun E, Costedio M, Aytac E, Kessler H, Abbas MA, Remzi F. Case-matched comparison of robotic versus laparoscopic proctectomy for inflammatory bowel disease.  Surgical Laparoscopy, Endoscopy, and Percutaneous Techniques 2016;26(3):e37-40
  99. Binboga S, Gorgun E, Rencuzogullari A, Ozuner G, Kessler H, Abbas MA. Predictors of wound dehiscence and its impact on mortality after abdominoperineal resection: data from the National Surgical Quality Improvement Program.  Techniques in Coloproctology 2016;20(7):475-482.
  100. Wong A, Isik O, Abbas MA, Gorgun E. Laparoscopic assisted endoscopic full-thickness resection (EFTR) of colon lesion.  Colorectal Disease 2016;18(2):217
  101. Wong A, Gorgun E, Haber GP, Abbas MA. Laparoscopic repair of ureteric injury: psoas hitch with ureteric reimplantation.  Colorectal Disease 2016;18(11):1108-1109
  102. Benlice C, Gorgun E, Aytac E, Costedio M, Kessler H, Abbas MA, Remzi FH. Robotic, laparoscopic, and open colectomy: a case-matched comparison from the ACS-NSQIP.  The International Journal of Medical Robotics and Computer Assisted Surgery 2016;13(3);e1783
  103. Benlice C, Costedio M, Stocchi L, Abbas MA, Gorgun E. Hand-assisted laparoscopic versus open colectomy: an assessment from the American College of Surgeons National Surgical Quality Improvement Program (ACS NSQIP) procedure-targeted cohort.  American Journal of Surgery 2016;212(5):808-813
  104. Gorgun E, Benlice C, Abbas MA, Stocchi L, Remzi FH. Conversion in laparoscopic colorectal surgery: are short-term outcomes worse than with open surgery?  Techniques in Coloproctology 2016;20(12):845-851
  105. Abbas MA, Kharbadze G, Ross EM, Abbass MA. Predictors of outcome for endoscopic colorectal stenting: a decade experience.  International Journal of Colorectal Disease 2017;32(3):375-382
  106. Lackberg Z, Abbas MA. Colonic stenting: when and how.  Seminars In Colon and Rectal Surgery 2017;28(1):34-40
  107. Aydinli HH, Benlice C, Ozuner G, Gorgun E, Abbas MA. Risk factors associated with postoperative morbidity in over 500 colovesical fistula patients undergoing colorectal surgery: a retrospective cohort study from ACS-NSQIP database.  International Journal of Colorectal Disease 2017; 32(4):469-474
  108. Rencuzogullari A, Benlice C, Valente M, Abbas MA, Remzi FH, Gorgun E. Predictors of anastomotic leak in elderly patients after colectomy: nomogram-based assessment from the American College of Surgeons National Surgical Quality Improvement Program (ACS NSQIP) Procedure-Targeted Cohort.  Diseases of Colon and Rectum 2017;60(5):527-536
  109. Gorgun E, Benlice C, Abbas MA, Steele S. Experience in colon sparing surgery in North America – advanced endoscopic approaches for complex colorectal lesions. Surgical Endoscopy 2018;32(7):3114-3121
  110. Gorgun E, Isik O, Sapci I, Aytac E, Abbas MA, Ozuner G, Church J, Steele SR. Colonoscopy-induced acute diverticulitis: myth or reality? Surgical Endoscopy 2018;32(7):3290-3294
  111. Paquette IM, Vogel JD, Abbas MA, Steele S. The ASCRS clinical practice guidelines for the treatment and prevention of radiation proctitis and radiation enteritis. Diseases of Colon and Rectum 2018;61(10):1135-1140
  112. Fleshman J, Branda ME, Sargent DJ, Boller AM, George VV, Abbas MA, Peters WR, Maun DC, Herline A, Fichera A, Mutch M, Wexner SD, Whiteford MH, Marks J, Birnbaum E, Margolin DA, Larson DW, Marcello PW, Posner MC, Read TE, Monson JR, Wren SM, Pisters PW, Nelson H. Disease free survival and local recurrence for laparoscopic resection compared to open resection of stage II-III rectal cancer: follow up results of the ACOSOG Z6051 randomized controlled trial (Alliance). Annals of Surgery 2019;269(4):589-595
  113. Tomassi MJ, Abbas MA, Klaristenfeld DD. The impact of an expectant management protocol in patients at risk for invasive squamous cell carcinoma of the anus: a large US healthcare experience. International Journal of Colorectal Disease 2019;34(1):47-54
  114. Rencuzogullari A, Abbas MA, Steele S, Stocchi L, Hull T, Binboga S, Gorgun E. Predictors of one-year outcomes following the abdominoperineal resection. The American Journal of Surgery 2019;218(1):119-124
  115. Tabaja L, Akmal Y, Lackberg Z, Abbas MA. Case-matched comparison of intersphincteric proctectomy versus proctectomy with stapled coloanal anastomosis for low rectal cancer. World Journal of Colorectal Surgery 2019;8(3):84-88
  116. Abbas MA, Shalabi M, Gopalan D, Bianzon P, Georgopoulos F. Propofol administration by anesthesiologists versus endoscopists during colonoscopy: does it make a difference? World Journal of Colorectal Surgery 2019;8(4);102-106
  117. Abbas MA. Minimally invasive proctologic procedures (MIPP): the quest for less pain, safer surgery, and faster recovery. Seminars in Colon and Rectal Surgery 2019;30(4):1-2
  118. Al-Shamsi H, Jaafar H, Tirmazy SH, Elkhoury M, Azribi F, Jelovac D, Doufan TA, Labban AR, Basha AA, Samir A, Maarraoui A, Al Dameh A, Al-Awadhi A, Al Haj Ali B, Aboud B, Elshorbagy D, Trad D, Abdul Jabbar D, Hamza D, Ashtar E, Dawoud E, Aleassa EM, Khan F, Iqbal F, Abdellatif H, Darr H, Abu-Gheida I, Ansari J, McManus MC, Afrit M, Masri M, Abduhaleeqa M, Alfalasi M, Omara M, Diab M, Latif MF, Oner M, Dreir N, Almarzouqi O, Singarachari RA, Bendardaf R, Alrawi S, Aldeen SS, Rana Shabeeha, Talima S, Abdelgawad T, Ahluwalia A, Madi T, Alkhouri T, Ul Haq U, Alabed YZ, Ali Z, Abbas MA, Abdel Razek A, Al-Khatib F. The state of cancer care in the United Arab Emirates in 2020: challenges and recommendations, a report by the United Arab Emirates Oncology Task Force. Gulf Journal of Oncology 2020;32;1-19
  119. Darr H, Abbas MA. Stenting as a bridge to surgery or a palliative treatment. Clinics in Colon and Rectal Surgery 2020;33(5):279-286
  120. Al Ansari A, Al Ansari SA, Mansour E, Abbas MA. Idiopathic myointimal hyperplasia of the mesenteric veins. Journal of Surgical Case Reports 2021;1:1-3
  121. Abbas MA. In pursuit of the ideal treatment for pilonidal disease. Seminars in Colon and Rectal Surgery 2022; [accepted]
  122. Abbass MA, Abbas MA. Preoperative work-up, staging and treatment planning of Colorectal Cancer. Digestive Disease Interventions 2022; [accepted]
  123. Oner M, Abbas MA. Endoscopic colorectal stenting: lessons learned from a 2-decade journey. Clinics in Colon and Rectal Surgery 2023; [in progress]
  124. Oner M, Abbas MA. Endorectal advancement flap for anorectal fistulae: a single surgeon’s experience 2023; [in progress]
  125. Oner M, Abbas MA. Management of colovesical fistula. Turkish Journal of Colorectal Surgery 2023; [in progress]

Last update August 12, 2022

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Abstracts

  1. Fischell TA, Abbas MA, Grant GW, Siegel RJ. Ultrasonic energy causes dose-dependent, endothelium-independent arterial relaxation.  Circulation 1990;82(4):219
  2. Fischell TA, Abbas MA, Kallman RF, Hunt C, Benitz WE. Low-dose irradiation inhibits clonal proliferation of smooth muscle cells: a new approach to restenosis. Arteriosclerosis and Thrombosis 1991;11(5):1425a
  3. Abbas MA, Benitz WE, Fischell TA. Comparative effects of single and fractionated doses of irradiation upon smooth muscle cell proliferation.  Clinical Research 1992;40(1):43A
  4. Abbas MA, Afshari NA, Stadius ML, Kernoff RS, Fischell TA. Effect of X-ray irradiation on neointimal proliferation following balloon angioplasty.  Clinical Research 1993;41(1):79A
  5. Abbas MA, Olden KW. Spontaneous intramural small bowel hematoma: a rare cause of intestinal obstruction.  The American Journal of Gastroenterology 1999;94(9):2692
  6. Abbas MA, Frasco PE, Rakela J, Harrison ME, Moss AA, Douglas DD, Balan V, Hentz JG, Mulligan DC. Aprotinin effects blood products usage and reoperative rate for bleeding following orthotopic liver transplantation. American Journal of Transplantation 2001;1(supplement):206
  7. Kaminski A, Liu A, Applebaum H, Haigh PI, Abbas MA. Interval appendectomy is not indicated in pediatric patients initially treated non-operatively for appendicitis.  Diseases of the Colon and Rectum 2006;49(5):741
  8. Abbas MA, Lawes D, Tejirian T, Hamadani A, Heppell J, Young-Fadok T, Efron JE. Anal Fistula Plug (AFP™) for the Treatment of Fistula-in-Ano.  Diseases of the Colon and Rectum 2007;50(5):749
  9. Weisman N, Abbas MA. Can Pre-operative endoanal ultrasound for fistula-in-ano predict post-operative outcome?  Diseases of the Colon and Rectum 2007;50(5):699
  10. Hamadani A, Haigh PI, Liu A, Abbas MA. Who is at risk for developing chronic anal fistula or recurrent sepsis after initial perirectal abscess?  Diseases of the Colon and Rectum 2008;51(5):637
  11. Etzioni D, Cannom R, Chiu V, Burchette R, Haigh PI, Abbas MA. Outpatient treatment of acute diverticulitis: rates, predictors of failures.  Diseases of the Colon and Rectum 2009;52(4):798
  12. Regadas F, Haas E, Abbas MA, Jorge J, Habr-Gama A, Sands D, Wexner S, Amaral I, Sardinhas C, Lima D, Sagae U, Murad-Regadas S. Prospective multicenter trial comparing echodefecography with defecography in the assessment of anorectal dysfunctions in patients with obstructed defecation.  Diseases of the Colon and Rectum 2010;53(4):534
  13. Tam MS, Abbas MA. Outcome of iatrogenic perforation following colorectal endoscopy.  Diseases of the Colon and Rectum 2012;55(5):184
  14. Yeh J, White EC, Rao AR, Wang R, Abbas MA. Primary adenocarcinoma of the anal canal: a single institutional report on a rare malignancy.  International Journal of Radiation OncologyBiologyPhysics 2013;87(2):S340
  15. Rencuzogullari A, Gorgun E, Costedio M, Aytac E, Kessler H, Abbas M, Remzi FH. 866 case matched comparison of robotic versus laparoscopic proctectomy for inflammatory bowel disease.  Gastroenterology 2015;148(4):S1121
  16. Aydinli HH, Benlice C, Ozuner G, Abbas MA, Gorgun E. Predictors of postoperative morbidity after emergency sigmoid resection for diverticular disease: a nationwide study.  Journal of American College of Surgeons 2016;223(4):e87

Last update August 12, 2022

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Letters to the editor / Invited Editorials / Invited Commentary

  1. Abbas MA. Bowel incontinence: an update on treatment options.  National Association For Continence 2006;24(1):8
  2. Tejirian T, Abbas MA. Sitz bath: a reply.  Diseases of Colon and Rectum 2006;49(7):1080-1081
  3. Abbas MA, Tejirian T. Unroofing and marsupialization should be the first procedure of choice for pilonidal disease.  Diseases of Colon and Rectum 2006;49(8):1242-1243
  4. Goldstone S, Abbas MA. A rising cause for concern: Human papilloma virus and carcinoma of the anus.  General Surgery News 2007;34(9):14-15
  5. Abbas MA. Laparoscopic repair of spontaneous perineal hernia.  The  Surgeon’s Lounge.  General Surgery News 2007;34(12):15-16
  6. Abbas MA, Tejirian T. Bioglue® for the treatment of anorectal fistulae is associated with acute anal sepsis.  Diseases of Colon and Rectum 2008;51(7):1155-1156
  7. Abbas MA. Intramural formalin injection for rectal ulcer refractory to medical and endoscopic treatment.  Diseases of Colon and Rectum 2008;51(7):1160-1162
  8. Lee SL, Tejirian T, Abbas MA. Pilonidal sinus disease in children.  Journal of Pediatric Surgery 2008;43(10):1950-1951
  9. Abbas MA. Components separation.  The Surgeons’ Lounge.  General Surgery News 2009;36(9):30-31
  10. Abbas MA. Anastomotic leak: should we continue to accept the risks?  Diseases of Colon and Rectum 2010;53(6):859-860
  11. Jain A, Abbas MA, Rayhanabad J, Sekhon H. Ileal pouch volvulus following total proctocolectomy and ileo-anal anastomosis.  Inflammatory Bowel Diseases 2010;16(1):3-4
  12. Abbas MA. Expert commentary on benign colonic stricture. Diseases of Colon and Rectum 2021;64(9):1044-1045

Last update August 12, 2022

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Scientific Presentations

Oral presentations

  1. Abbas MA, Adame DD, Johnson TC. Differences in the effects of contraceptive education between students from Georgia and students from other national geographic regions.   23rd convention of The Georgia Association for Health, Physical Education, Recreation, and Dance, Atlanta, Georgia (1989)
  2. Abbas MA, Adame DD. A comparison study of physical fitness levels of male and female  23rd convention of The Georgia Association for Health, Physical Education, Recreation, and Dance, Atlanta, Georgia (1989)
  3. Adame DD, Cole SP, Johnson TC, Nowicki S, Matthiasson H, Abbas MA. Using social learning theory to predict physical fitness.  Annual meeting of American Alliance for Health, Physical Education, Recreation, and Dance, Baltimore, Maryland (1991)
  4. Radell SA, Adame DD, Cole SP, Johnson TC, Abbas MA. Physical fitness, body image, and locus of control in college women dancers and non-dancers.  Annual Meeting of American Alliance for Health, Physical Education, Recreation, and Dance, Baltimore, Maryland (1991)
  5. Abbas MA, Adame DD. Effect of AIDS education on the sexual behavior of adolescents.  10th Annual Stanford Medical Student Research Symposium, Palo Alto, California (1994)
  6. Abbas MA, Stone WM, Fowl RJ, Gloviczki P, Pairolero PC, Hallett JW, Cherry KJ, Bower TC, Panneton JM. Splenic artery aneurysms: a critical reappraisal.  Annual Meeting of the Society for Vascular Surgery, Baltimore, Maryland (2001)
  7. Abbas MA. Spontaneous intramural small bowel hematoma.  Academic Excellence Day, Mayo Clinic, Scottsdale, Arizona (2001)
  8. Stone WM, Abbas MA, Cherry KJ, Fowl RJ, Gloviczki P. Superior mesenteric artery aneurysms:  is presence an indication for intervention?  Annual Meeting of Western Vascular Society, Santa Fe, New Mexico (2001)
  9. Stone WM, Abbas MA, Fowl RJ. Celiac artery aneurysms:  a reappraisal of a rare entity.  Annual Meeting of Peripheral Vascular Surgical Society, Breckenbridge, Colorado (2001)
  10. Deron TJ, Abbas MA, Fowl RJ, Stone WM, Bower T, McKusick MA, Gloviczki P. Management of mesenteric arterial branch aneurysms.  Annual Meeting of Peripheral Vascular Surgical Society, Breckenbridge, Colorado (2001)
  11. Abbas MA, Fowl RJ, Stone WM, Panneton J, Oldenburg A, Bower TC, Cherry KJ, Gloviczki P. Hepatic artery aneurysms: factors predicting complications. Annual Meeting of Western Vascular Society, Newport Beach, California (2002)
  12. Tessier DJ, Stone WM, Fowl RJ, Abbas MA, Andrews JC, Sarr MG, Nagorney DM, Cherry KJ, Gloviczki P. Hepatic artery pseudoaneurysms in the non-transplant patient: an underappreciated complication after hepatic, biliary, and pancreatic procedures.  Annual Meeting of Western Vascular Society, Newport Beach, California (2002)
  13. Tessier DJ, Abbas MA, Stone WM, Fowl RJ, Bower TC, Andrews JC, Nagorney DM, Farnell MB, Cherry KJ, Gloviczki P. Splenic artery pseudoaneurysms: is aggressive management necessary?  Annual Meeting of Australian Vascular Society, Melbourne, Australia (2002)
  14. Abbas MA, Larach JA, Basu A, Baig K, Rodriguez J, Weiss EG, Efron J, Nogueras JJ, Vernava AM, Sands DR, Wexner SD. Fecal incontinence after transanal excision of rectal tumors.  14th Annual Surgical Research Forum of the South Florida Chapter of the American College of Surgeons, Miami, Florida (2003)
  15. Haigh PI, Collins JC, Abbas MA. Hospitalization for acute diverticulitis does not mandate elective colectomy.  Annual Meeting of Western Surgical Society, Las Vegas, Nevada (2004)
  16. Puapong DP, Abbas MA. Endoluminal colonic stenting: indications and techniques.  Annual Meeting of the Southern California Chapter, American College of Surgeons, Santa Barbara, California (2005)
  17. Puapong D, Abbas MA, Applebaum H. Buschke-Lowenstein tumor in the pediatric population. Annual Meeting of the Southern California Chapter, American College of Surgeons, Santa Barbara, California (2006)
  18. Casillas RA, Rayhanabad JA, Shabatian H, Abbas MA, Rao AR, DiFronzo LA. Is there a need for routine fecal diversion when performing a protectomy with coloanal anastomosis for low rectal cancer?  Annual Meeting of the Pacific Coast Surgical Society, San Francisco, California (2006)
  19. Tejirian T, Goldhardt R, Shekherdimian S, Haigh PI, Abbas MA. Surgical outcome for pilonidal disease.  Kaiser Permanente 2nd National Surgical Symposium, Kohala Coast, Hawaii (2006)
  20. Casillas RA, Abbas MA, Rao AR, DiFronzo LA. Temporary fecal diversion results in better functional outcome following proctectomy with coloanal anastomosis for low rectal cancer.  Kaiser Permanente 2nd National Surgical Symposium, Kohala Coast, Hawaii (2006)
  21. Goldhardt R, Tejirian T, Lee JJ, Abbas MA. Is wide local excision for pilonidal disease still justified?  Annual Meeting of the Southern California Chapter, American College of Surgeons, Santa Barbara, California (2007)
  22. Merunka V, Javors BR, Winger DI, Hines J, Abbas MA, Mindelzun RE, Weston SR, Katz DS. Colonic volvulus: review of clinical findings, imaging, and treatment.  Association of University Radiologists Annual Meeting, Denver, Colorado (2007)
  23. Weisman N, Abbas MA. Can pre-operative endoanal ultrasound for fistula-in-ano predict post-operative outcome?  American Society of Colon and Rectal Surgeons Annual Meeting, St. Louis, Missouri (2007)
  24. Merunka V, Javors BR, Winger DI, Hines J, Abbas MA, Mindelzun RE, Weston SR, Katz DS. Colonic volvulus: review of clinical findings, imaging, and treatment.  Society of Gastrointestinal Radiologists Annual Meeting, Bonita Springs, Florida (2007)
  25. Shabatian H, Abbas MA. Long-term outcome of endoscopic stenting.  Kaiser Permanente 3nd National Surgical Symposium, Napa Valley, California (2007)
  26. Weisman N, Abbas MA, Katz DS. Ultrasound as a predictor of post-operative outcome in complex anal fistulae.  Radiologic Society of North America Meeting, Chicago, Illinois (2007)
  27. Lemus-Rangel RX, Hamadani A, Abbas MA. Long-term outcome of endorectal advancement flap for complex anorectal fistulae.   Annual Meeting of the Southern California Chapter, American College of Surgeons, Santa Barbara, California (2008)
  28. Shabatian H, Lee DJ, Abbas MA. Components separation: a solution to complex abdominal wall defects. Annual Meeting of the Southern California Chapter, American College of Surgeons, Santa Barbara, California (2008)
  29. Nguyen N, Yegiyants S, Kaloostian C, Abbas MA, DiFronzo LA. The surgical care improvement project (SCIP) initiative to reduce infection in elective colorectal surgery: which performance measures affect outcome?  Annual Meeting of the Southern California, American College of Surgeons, Santa Barbara, California (2008)
  30. Weisman N, Katz DS, Abbas MA. The role of endoanal ultrasound in the surgical management of fistula in ano.  USC Graduate Society of Graduate Radiologists Annual Meeting, Rancho Mirage, California (2008)
  31. Hamadani A, Haigh PI, Liu AL, Abbas MA. Who is at risk for developing chronic anal fistula or recurrent sepsis after initial perirectal abscess?  American Society of Colon and Rectal Surgeons and Tripartite Meeting, Boston, Massachusetts (2008)
  32. Shabatian H, Abbas MA. Components separation for contaminated abdominal wall defects. Kaiser Permanente 4th National Surgical Symposium, Ojai, California (2008)
  33. Merunka V, Javors BR, Winger DI, Hines J, Abbas MA, Mindelzun RE, Weston SR, Katz DS. Colonic volvulus: review of clinical and imaging findings and treatment.  Radiological Society of North America, Chicago, Illinois (2008)
  34. Aivaz O, Rayhanabad JA, Nguyen V, Haigh PI, Abbas MA. Long-term outcome of Botulinum Toxin A with fissurectomy versus lateral internal sphincterotomy for chronic anal fissure.  Annual Meeting of the Southern California Chapter, American College of Surgeons, Santa Barbara, California (2009)
  35. Rayhanabad JA, Abbas MA. Endoscopic colorectal stenting for malignant and benign disease.   Annual Meeting of the Southern California Chapter, American College of Surgeons, Santa Barbara, California (2009)
  36. Rayhanabad JA, Abbas MA. Endoscopic stenting of colorectal disease: a single surgeon’s experience.   Kaiser Permanente 5th Annual National Surgical Symposium, Kauai, Hawaii (2009)
  37. Etzioni DA, Cannom RR, Chiu V, Burchette RJ, Haigh PI, Abbas MA. Outpatient treatment of acute diverticulitis:  rates and predictors of success.  American Society of Colon and Rectal Surgeons Annual Meeting, Hollywood, Florida (2009)
  38. Jackson C, Abbas MA. Long-term outcome of fistula-in-ano surgery: a single surgeon 5-year experience.  23rd National Conference on Undergraduate Research, La Crosse, Wisconsin (2009)
  39. Abbas MA. Long-term outcome of endoscopic resection of colorectal tumors.  Priestley Society 44th Annual Meeting, Scottsdale, Arizona (2009)
  40. Regadas FS, Haas E, Abbas MA, Jorge J, Habr-Gama A, Sands D, Wexner S, Amaral I, Sardinhas C, Lima D, Sagae U, Murad-Regadas S. Prospective multicenter trial comparing echodefecography with defecography in the assessment of anorectal dysfunctions in patients with obstructed defecation.  American Society of Colon and Rectal Surgeons Annual Meeting, Minneapolis, Minnesota (2010)
  41. Abbas MA, Jackson C, Haigh PI. Predictors of outcome for anal fistula surgery.  Pacific Coast Surgical Association 82nd Annual Meeting, Scottsdale, Arizona (2011)
  42. Chun L, Haigh PI, Abbas MA. Temporary loop ileostomy: at what cost?  Kaiser Permanente 7th National Surgical Symposium, Rancho Mirage, California (2011)
  43. Abbas MA, Cannom RR, Chiu VY, Burchette, Haigh PI, Etzioni DA. Which patients with acute sigmoid diverticulitis require inpatient admission?  American College of Surgeons 97th Annual Clinical Congress, San Francisco, California (2011)
  44. Tam MS, Abbas MA. Outcome of iatrogenic perforation following colorectal endoscopy.  Kaiser Permanente 8th National Surgical Symposium, Maui, Hawaii (2012)
  45. Cheng AW, Abbas MA, Tejirian T. Current trends and outcomes with use of biologic mesh in abdominal wall repairs.  Southern California Chapter, American College of Surgeons Annual Meeting, Santa Barbara, California (2013)
  46. Tam MS, Abbass MA, Tsay A, Abbas MA. Robotic rectal cancer excision: are there advantages compared to laparoscopy?  American Society of Colon and Rectal Surgeons Annual Meeting, Phoenix, Arizona (2013)
  47. Abbass MA, Tsay A, Klaristenfeld D, Abbas MA. The morbidity and mortality of the abdominoperineal resection in the modern era: how are we doing one century after the original work of Dr. William Ernest Miles?  Kaiser Permanente 9th National Surgical Symposium, San Francisco, California (2013)
  48. Cheng AW, Abbas MA, Tejirian T. Current trends and outcomes with use of biologic mesh in abdominal wall repairs.  Kaiser Permanente 9th National Surgical Symposium, San Francisco, California (2013)
  49. Attaluri V, Abbas MA. A colorectal surgical unit’s experience with transvaginal repair of rectocele.   Southern California Chapter, American College of Surgeons Annual Meeting, Santa Barbara, California (2014)
  50. Cheng AW, Abbas MA, Tejirian T. Outcome of abdominal wall hernia repair with biologic mesh:  Permacol™ vs. Strattice™.  Southern California Chapter, American College of Surgeons Annual Meeting, Santa Barbara, California (2014)
  51. Abbas MA, Kharabadze G. Predictors of outcome for endoscopic colorectal stenting.  American Society of Colon Rectal Surgeons Annual Meeting, Boston, Massachusetts (2015)
  52. Rencuzogullari A, Gorgun E, Costedio M, Aytac E, Kessler H, Abbas MA, Remzi FH. Case-matched comparison of robotic versus laparoscopic proctectomy for inflammatory bowel disease.  Digestive Disease Week, Washington, D.C. (2015)
  53. Benlice C, Gorgun E, Aytac E, Costedio MM, Kessler H, Abbas MA, Remzi FH. Robotic vs. laparoscopic vs. open colectomy: a case-matched analysis from the ACS-NSQIP.  American College of Surgeons NSQIP Annual Conference, Chicago, Illinois (2015)
  54. Benlice C, Aytac E, Ozuner G, Abbas MA, Gorgun E. Laparoscopic versus robotic right colectomy: an assessment from the ACS-NSQIP procedure-targeted cohort.  Minimally Invasive Surgery Week 2015 Society of Laparoendoscopic Surgeons Annual Meeting, New York, New York (2015)
  55. Benlice C, Gorgun E, Abbas MA. Colon sparing advanced endoscopic techniques for complex colorectal lesions.  The Ohio Chapter of the American College of Surgeons Annual Meeting, Cleveland, Ohio (2016) [Selected for 3rd Place Oncology Category Award]
  56. Rencuzogullari A, Benlice C, Valente M, Abbas MA, Remzi FH, Gorgun E. Prediction of anastomotic leak in elderly patients after colectomy: nomogram based assessment from NSQIP procedure-targeted cohort.   Ohio Valley Society of Colon and Rectal Surgeons, Cleveland, Ohio (2016)
  57. Rencuzogullari A, Benlice C, Valente M, Abbas MA, Remzi FH, Gorgun E. Prediction of anastomotic leak in elderly patients after colectomy: nomogram based assessment from NSQIP procedure-targeted cohort.  Central Surgical Association Annual Meeting, Montreal, Canada (2016)
  58. Gorgun E, Benlice C, Abbas MA. Colon sparing advanced endoscopic techniques for complex colorectal lesions.  Society of American Gastrointestinal and Endoscopic Surgeons Annual Meeting, Houston, Texas (2017)
  59. Abbas MA, Shalabi M, Gopalan D, Bianzon P, Georgopoulos F. Propofol administration by anesthesiologist vs. endoscopist during colonoscopy: does it make a difference?  American Society of Colon Rectal Surgeons Annual Meeting, Nashville, Tennessee (2018)
  60. Oner M, Abbas MA. Endorectal advancement flap for anorectal fistula: a single surgeon experience 1st Turkish International Colorectal Surgery Congress, XVIIIth Turkish Colon and Rectal Surgery Congress, XIth Colorectal Surgery Nursing Congress, Antalya, Turkey (2021)
  61. Oner M, Abbas MA. Laparoscopic cecectomy for diseases of the appendix and cecum. 1st Turkish International Colorectal Surgery Congress, XVIIIth Turkish Colon and Rectal Surgery Congress, XIth Colorectal Surgery Nursing Congress, Antalya, Turkey (2021)

Last update August 12, 2022

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Poster Presentations

  1. Abbas MA, Grant GW, Fischell TA. Ultrasonic energy causes arterial relaxation: dose-response, time-response, and endothelium-independence.  7th Annual Stanford Medical Student Research Symposium, Palo Alto, California (1991)
  2. Abbas MA, Douglas DD, Frasco PE, Moss AA, Balan V, Rakela J, Hentz JG, Mulligan DC. The use of aprotinin in orthotopic liver transplant recipients reduces the re-operative rate for bleeding.  53rd Annual Southwestern Surgical Congress Meeting, Cancun, Mexico (2001)
  3. Abbas MA, Collins JM, Ward EM, Olden KW, Kelly KA. Spontaneous intramural small bowel hematoma: radiographic findings and outcome.  Society of Gastrointestinal Radiology, Scottsdale, Arizona (2001)
  4. Mclemore E, Pockaj B, Abbas MA, Miller D. GIST as the cause of massive upper GI bleeding.  Annual Southwestern Surgical Congress, San Diego, California (2002)
  5. Shekherdimian S, Puapong D, Abbas MA, Applebaum H. Buschke-Lowenstein tumor in children.  39th Annual Meeting of the Pacific Association of Pediatric Surgeons, Taipei, Taiwan (2006)
  6. Shpall AI, Blumberg JM, Marchis C, Abbas MA, Aboseif SR, Bellman GC. Management of rectal injuries sustained during laparoscopic radical prostatectomy.  World Congress of Endourology, Cleveland, Ohio (2006)
  7. Tejirian T, Abbas MA. Outcome of Bioglue™ injection for the treatment of anal fistula.  American College of Surgeons 92nd Annual Clinical Congress, Chicago, Illinois (2006)
  8. Tejirian T, Abbas MA. Anal Fistula Plug (AFP™) for the treatment of fistula-in-ano.  Annual Meeting of the Southern California Chapter, American College of Surgeons, Santa Barbara, California (2007)
  9. Abbas MA. Endorectal advancement flap: a single surgeon’s experience.  Pacific Coast Surgical Association 78th Annual Meeting, Kohala Coast, Hawaii (2007)
  10. Abbas MA. Outcome of the SECCA™ radiofrequency treatment for anal incontinence.  Pacific Coast Surgical Association 78th Annual Meeting, Kohala Coast, Hawaii (2007)
  11. Abbas MA, Lawes D, Tejirian T, Hamadani A, Heppell J, Young-Fadok T, Efron JE. Anal Fistula Plug (AFP™) for the Treatment of Fistula-in-Ano.  American Society of Colon and Rectal Surgeons Annual Meeting, St. Louis, Missouri (2007)
  12. Abbas MA, Villalba H, Hamadani A. Endorectal advancement flap for complex anorectal fistulae:  are there predictors of failure?  American College of Surgeons 93rd Annual Clinical Congress, New Orleans, Louisiana (2007)
  13. Lee SL, Tejirian T, Abbas MA. Current management of adolescent pilonidal disease.  American Academy of Pediatrics, San Francisco, California (2007)
  14. Merunka V, Javors BR, Winger DI, Hines J, Abbas MA, Mindelzun RE, Weston SR, Katz DS. Clinical presentation and imaging findings of colonic volvulus.  American Roentgen Ray Society, Washington DC (2008)
  15. Nguyen V, Haigh PI, Abbas MA. Is fissurectomy with Botolinum Toxin A injection a viable alternative to lateral internal sphincterotomy for chronic anal fissure?  American College of Surgeons 94th Annual Clinical Congress, San Francisco, California (2008)
  16. Abbas MA. Long-term outcome of intraluminal endoscopic stenting of benign and malignant colorectal disease.  American College of Surgeons 94th Annual Clinical Congress, San Francisco, California (2008)
  17. Lee SL, Abbas MA. Colonic volvulus in the pediatric population.  American College of Surgeons 94th Annual Clinical Congress, San Francisco, California (2008)
  18. Merunka V, Javors BR, Winger DI, Hines J, Abbas MA, Mindelzun RE, Weston SR, Katz DS. Colonic volvulus: review of clinical findings, imaging findings, and treatment.  American Society of Emergency Radiology Annual Scientific Meeting, Houston, Texas (2008)
  19. Kamrava A, Lee SL, Abbas MA. Pediatric colonic volvulus.   Annual Meeting of the Southern California Chapter, American College of Surgeons, Santa Barbara, California (2009)
  20. Wijeratne RX, Kao K, K Ovrahim, Teller T, Abbas MA. Short and long-term outcomes of patients sustaining iatrogenic endoscopic colorectal perforation.  Digestive Disease Week Annual meeting, Chicago, Illinois (2009)
  21. Abbas MA, Jackson C, Haigh PI. Predictors of failure and complications following anal fistula surgery.  American College of Surgeons 95th Annual Clinical Congress, Chicago, Illinois (2009)
  22. Yegiyants S, Tam M, Lee DJ, Abbas MA. Outcome of components separation for complex contaminated abdominal wall defects.  American College of Surgeons 95th Annual Clinical Congress, Chicago, Illinois (2009)
  23. Wijeratne R, Teller T, Sekhon H, Abbas MA. Hepatosplenic T cell lymphoma following exposure to Infliximab in a patient with ulcerative colitis.  Advances in Inflammatory Bowel Diseases, Hollywood, Florida (2009)
  24. Kao K, Giap A, Abbas MA. Endoscopic mucosal resection of large colorectal polyps.  Pacific Coast Surgical Association 81st Annual meeting, Maui, Hawaii (2010)
  25. Lu M, Daly BD, Safdar NM, Katz DS, Abbas MA. Acute complications of colonoscopy: CT diagnosis.  Radiological Society of North America’s 96th Scientific Assembly and Annual Meeting, Chicago, Illinois (2010)
  26. Flug JA, Stavropoulos S, Garnet DJ, Gidwaney R, Widmer J, Katz DS, Babich J, Irwin G, Abbas MA. Advanced endoscopic procedures: indications, imaging findings, and implications for the radiologist.  Radiological Society of North America’s 96th Scientific Assembly and Annual Meeting, Chicago, Illinois (2010)
  27. Lu M, Daly BD, Safdar NM, Katz DS, Abbas MA. Acute complications of colonoscopy: CT diagnosis.  Association of the University Radiologists, Boston, Massachusetts (2011)
  28. Flug JA, Stavropoulos S, Garnet DJ, Gidwaney R, Widmer J, Katz DS, Babich J, Irwin G, Abbas MA. Advanced endoscopic procedures: indications, imaging findings, and implications for the radiologist.  Association of the University Radiologists, Boston, Massachusetts (2011)
  29. Chun L, Haigh PI, Tam M, Abbas MA. Defunctioning loop ileostomy: a double edge sword.  American Society of Colon and Rectal Surgeons Annual Meeting, Vancouver B.C., Canada (2011)
  30. Flug JA, Stavropoulos S, Garnet DJ, Gidwaney R, Widmer J, Katz DS, Babich J, Irwin G, Abbas MA. Advanced endoscopic procedures: indications, imaging findings, and implications for the radiologist.  Society of Gastrointestinal Radiologists Annual Meeting, Carlsbad, California (2011)
  31. Chun L, Haigh PI, Abbas MA. Temporary loop ileostomy: a double-edged sword?  Tripartite Meeting, Cairns, Australia (2011)
  32. Chun LJ, Tam MS, Abbas MA. Rectourethral fistula following laparoscopic radical prostatectomy.  American College of Surgeons 97th Annual Clinical Congress, San Francisco, California (2011)
  33. Tam MS, Chun LJ, Abbas MA. Outcome of SECCA radiofrequency treatment for anal incontinence.  American College of Surgeons 97th Annual Clinical Congress, San Francisco, California (2011)
  34. Lu M, Daly B, Safdar N, Abbas MA, Katz DS. Acute complications of colonoscopy: CT diagnosis.   American Society of Emergency Radiology Annual Meeting, Biscayne Bay, Florida (2011)
  35. Tam MS, Abbas MA. Outcome of iatrogenic perforation following colorectal endoscopy.  American Society of Colon and Rectal Surgeons Annual Meeting, San Antonio, Texas (2012)
  36. Abbass MA, Tsay AT, Abbas MA. Is the laparoscopic approach feasible for chronic sigmoid diverticulitis with fistula?  American college of Surgeons 98th Annual Clinical Congress, Chicago, Illinois (2012)
  37. Abbass MA, Tsay AT, Abbas MA. Colorectal-vaginal fistulas: a single institutional experience.  American college of Surgeons 98th Annual Clinical Congress, Chicago, Illinois (2012) [Selected Poster of Exceptional Merit Award]
  38. Ross EM, Abbas MA. Long-term outcome of endoscopic stenting for benign and malignant colorectal disease.  American college of Surgeons 98th Annual Clinical Congress, Chicago, Illinois (2012)
  39. Dietz D, Monson J, Fleshman J, Rothenberger D, Wexner S, Remzi F on behalf of the OSTRiCh Consortium. Multidisciplinary Team Approach to Rectal Cancer Patients at 18 U.S. Centers: Fact or Fiction? A Report from the Consortium to Optimize Surgical Treatment of Rectal Cancer (OSTRiCh).  American college of Surgeons 98th Annual Clinical Congress, Chicago, Illinois (2012)
  40. Cheng AW, Abbas MA, Tejirian T. Current trends and outcomes with use of biologic mesh in abdominal wall repairs.  American Hernia Society Annual Meeting, New York, New York (2012)
  41. Abbass MA, Tsay AT, Abbas MA. Outcome of Rectourethral fistula treatment.  Pacific Coast Surgical Association 84th Annual Meeting, Kauai, Hawaii (2013)
  42. Kazanjian K, Morgan J, Jabo B, Glandian A, Tschen J, Senthil M, Abbas MA. Increased risk of rectal cancer after external radiation therapy for prostate cancer:  a population-based cohort study.   Pacific Coast Surgical Association 84th Annual Meeting, Kauai, Hawaii (2013)
  43. Abbass MA, Tsay AT, Tam MS, Abbas MA. Colonic fistula: a single institutional experience.  American Society of Colon and Rectal Surgeons Annual Meeting, Phoenix, Arizona (2013)
  44. Abbass MA, Tsay A, Klaristenfeld D, Abbas MA. The morbidity and mortality of the abdominoperineal resection in the modern era: how are we doing one century after the original work of Dr. William Ernest Miles?  American Society of Colon and Rectal Surgeons Annual Meeting, Phoenix, Arizona (2013)
  45. Klaristenfeld D, Bonnie M, Abbass MA, Abbas MA. Impact of laparoscopic colorectal surgery on incidence of small bowel obstruction and ventral hernia:  a large healthcare organization’s experience.   American Society of Colon and Rectal Surgeons Annual Meeting, Phoenix, Arizona (2013)
  46. Vuong B, Collins JC, Bebchuk D, Abbas MA. The rate of clostridium difficile infection in patients with or without appendix.  American Society of Colon and Rectal Surgeons Annual Meeting, Phoenix, Arizona (2013)
  47. Yeh J, White E, Rao A, Abbas MA. Primary adenocarcinoma of the anal canal: a single institution report on a rare malignancy.  American Society of Radiation Oncology Annual Meeting, Atlanta, Georgia (2013)
  48. Klaristenfeld D, Li BH, Abbass MA, Abbas MA. The impact of laparoscopic colorectal surgery on mortality: a large health care organization’s experience.  American college of Surgeons 99thth Annual Clinical Congress, Washington, DC (2013)
  49. Katz DS, Mazzie JP, Bhargava P, Abbas MA, Grendell J, Pickhardt PJ. Incidentalomas on abdominal and pelvic CT: what the radiologist and clinician need to know.  Radiological Society of North America’s 99th Scientific Assembly and Annual Meeting, Chicago, Illinois (2013)
  50. Katz DS, Flug JA, Pickhardt PJ, Modayil RJ, Abbas MA, Bhargava P. Pitfalls of colon CT imaging: unanticipated-incidental colonic pathology.  Radiological Society of North America’s 99th Scientific Assembly and Annual Meeting, Chicago, Illinois (2013) [Selected for certificate of merit]
  51. Hines JJ, Katz DS, Flug J, Pickhardt PJ, Modayil RJ, Abbas MA, Bhargava P, Grendell J. Incidental and Unanticipated Colonic Polyps and Malignancies on “Routine” Abdominal and Pelvic CT: Lessons Learned.  American Roentgen Ray Society Annual meeting, San Diego, California (2014)
  52. Elliott P, Abbas MA. Outcome comparison of robotic vs. laparoscopic resection for sigmoid diverticulitis with fistulization.  American Society of Colon and Rectal Surgeons Annual Meeting, Hollywood, Florida (2014)
  53. Elliott P, Abbas MA. A decade experience with the gracilis flap at a tertiary colorectal surgery unit.  American Society of Colon and Rectal Surgeons Annual Meeting, Hollywood, Florida (2014)
  54. Elliott P, Abbas MA. A decade experience with the gracilis flap at a tertiary colorectal surgery unit.  Tripartite Colorectal Meeting, Birmingham, United Kingdom (2014)
  55. Attaluri V, Pedersen R, Abbas MA. Outcomes of endorectal advancement flap for complex anorectal fistulas.  American College of Surgeons 100th Annual Clinical Congress, San Francisco, California (2014)
  56. Benlice C, Costedio M, Stocchi L, Liu X, Abbas MA, Gorgun E. Hand-assisted laparoscopic versus open colectomy: an assessment from NSQIP procedure-targeted cohort.  SAGES, Nashville, Tennessee (2015)
  57. Benlice C, Gorgun E, Abbas MA, Remzi F. Conversion in laparoscopic surgery: are short-term outcomes worse than open surgery?  SAGES, Nashville, Tennessee (2015)
  58. Binboga S, Gorgun E, Rencuzogullari A, Ozuner G, Kessler H, Abbas MA. Predictors of wound dehiscence and its impact on mortality after abdominoperineal resection: data from the National Surgical Quality Improvement Program.  American Society of Colon Rectal Surgeons Annual Meeting, Boston, Massachusetts (2015)
  59. Binboga S, Abbas MA, Costedio M, Stocchi L, Dietz D, Gorgun E. Predictors of one-year outcomes after abdominoperineal resection. American Society of Colon Rectal Surgeons Annual Meeting, Boston, Massachusetts (2015)
  60. Rencuzogullari A, Binboga S, Costedio M, Abbas MA, Gorgun E. Adoption rate of laparoscopic colorectal surgery in the United States: an assessment from ACS-NSQIP. American College of Surgeons NSQIP Annual Conference, Chicago, Illinois (2015)
  61. Gamal MM, Santoro GA, Abbas MA. Overlapping sphincteroplasty: does number of vaginal delivery impact results?  European Society of Colorectal Surgery, Dublin, Ireland (2015)
  62. Abbas MA, Mahmoud M, Tsay AT, Santoro G, Abbass M. Fistulotomy with primary sphincter repair.  European Society of Colorectal Surgery, Dublin, Ireland (2015)
  63. Benlice C, Gorgun E, Costedio M, Stocchi L, Abbas MA, Remzi F. Laparoscopic versus robotic left-sided colectomy with low pelvic anastomosis: an assessment from the ACS-NSQIP procedure-targeted cohort.  SAGES, Boston, Massachusetts (2016)
  64. Aydinli HH, Benlice C, Ozuner G, Gorgun E, Abbas MA. Risk factors associated with postoperative morbidity in over 500 colovesical fistula patients undergoing colorectal surgery.  American Society of Colon Rectal Surgeons Annual Meeting, Los Angeles, California (2016)
  65. Akmal Y, Lackberg Z, Abbas MA. Case-matched comparison of intersphincteric proctectomy versus proctectomy with stapled
    coloanal anastomosis for low rectal cancer. American Society of Colon Rectal Surgeons Annual Meeting, Los Angeles, California (2016)
  66. Benlice C, Gorgun E, Abbas MA, Ozuner G. Comparison of laparoscopic and open surgery for margin positivity in colon cancer: an assessment from NSQIP procedure targeted cohort.  American Society of Colon Rectal Surgeons Annual Meeting, Los Angeles, California (2016)
  67. Aydinli HH, Benlice C, Ozuner G, Gorgun E, Abbas MA. Risk factors associated with postoperative morbidity in over 500 colovesical fistula patients undergoing colorectal surgery.  The Ohio Chapter of the American College of Surgeons NSQIP Meeting, Columbus, Ohio (2016) [Selected for First Place Surgical Quality Category]
  68. Aydinli HH, Benlice C, Ozuner G, Abbas MA, Gorgun E. Predictors of postoperative morbidity after emergency sigmoid resection for diverticular disease: a nationwide study.  American College of Surgeons 102nd Annual Clinical Congress, Washington, DC (2016)
  69. Mahgoub SM, Al Qudah H, Abbas MA. Aminoglycosides bladder irrigation for treatment of multidrug resistant organisms might be an option to treat complex cases of bacteriuria in the era of resistance and limited options.  Antibiotic Resistance Conference, Milan, Italy (2017)
  70. Abbas MA, Oner M, Darr H, Tejirian T. Laparoscopic cecectomy for diseases of the appendix and cecum. American Society of Colon and Rectal Surgeons Annual Meeting, Boston, Massachusetts (2020) [virtual presentation]

Last update August 12, 2022

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Invited Lectures

International

  1. Splenic artery aneurysms: The Mayo Clinic experience. Surgical Grand Rounds, American University, Beirut, Lebanon (2001)
  2. Invited Scholar, Professor Roland Parc Gastrointestinal Surgery Unit, Saint Antoine Hospital, Paris, France (2001)
  3. Rectourethral fistula: a surgeon’s perspective.  Surgical Grand Rounds, St. George’s Hospital, Beirut, Lebanon (2007)
  4. NOTES: an evolving field in surgery. Lebanese Society for General Surgery, Beirut, Lebanon (2008)
  5. Surgical options for rectourethral fistula. American University, Beirut, Lebanon (2008)
  6. NOTES: the dawn of a new surgical era. American University, Beirut, Lebanon (2008)
  7. Transanal endoscopic resection of rectal tumors. 11th Annual Meeting of The Egyptian Group of Colon and Rectal Surgeons, Sharm El-Sheikh, Egypt (2009)
  8. Stenting in rectal cancer. 11th Annual Meeting of The Egyptian Group of Colon and Rectal Surgeons, Sharm El-Sheikh, Egypt (2009)
  9. Abdominal wall surgery: components separation for complex abdominal wall defects with contamination.12th Spring Surgical Congress of the Lebanese Society of General Surgery joint meeting with the 19th Pan Arab Surgical Association Congress, Beirut, Lebanon (2009)
  10. Learning and teaching laparoscopic skills. 12th Spring Surgical Congress of the Lebanese Society of General Surgery joint meeting with the 19th Pan Arab Surgical Association Congress, Beirut, Lebanon (2009)
  11. Clinical trials in laparoscopic excision of rectal cancer: an update. 7th Annual International Congress of The Association of Coloproctology of Hungary, Debrecen, Hungary (2009)
  12. Fissurectomy with Botox injection versus lateral internal sphincterotomy for chronic anal fissure. 7th Annual Congress of The Association of Coloproctology of Hungary, Debrecen, Hungary (2009)
  13. Training of the future colorectal surgeon in a minimally invasive era – a USA perspective. 20th International Colorectal Scientific Congress. Exploring the Boundaries in Colorectal Surgery: The Past, The Present, and The Future, Singapore (2009)
  14. Redo pelvic surgery: tips and tricks. 20th International Colorectal Scientific Congress.  Exploring the Boundaries in Colorectal Surgery: The Past, The Present, and The Future, Singapore (2009)
  15. Colorectal anastomotic stricture. 20th International Colorectal Scientific Congress.  Exploring the Boundaries in Colorectal Surgery: The Past, The Present, and The Future, Singapore (2009)
  16. Complex anorectal fistulas. National Congress of Colorectal Surgeons of China and the 20th Shanghai Changhai International Colorectal Week, Shanghai, China (2010)
  17. Treatment options for chronic anal fissure. National Congress of Colorectal Surgeons of China and the 20th Shanghai Changhai International Colorectal Week, Shanghai, China (2010)
  18. Rectourethral fistulas. 4th Pancevo Coloproctology Workshop, Society of Coloproctology of Yugoslavia, Pancevo, Serbia (2011)
  19. Endoscopic management of anastomotic complications. 4th Pancevo Coloproctology Workshop, Society of Coloproctology of Yugoslavia, Pancevo, Serbia (2011)
  20. Anal flaps. XXV Biennal Congress of the International Society of University Colon and Rectal Surgeons, Bologna, Italy (2012)
  21. Surgical options for fecal incontinence. American University, Beirut, Lebanon (2012)
  22. Multidisciplinary digestive disease institute in the gulf region. Lunch and learn round, Cleveland Clinic, Abu Dhabi, United Arab Emirates (2014)
  23. Endoscopic management of anastomotic complications and stenting. The Turkish Society of Colon and Rectal Surgeons, Adana, Turkey (2014)
  24. The gracilis flap for complex rectal fistulas. The Turkish Society of Colon and Rectal Surgeons, Adana, Turkey (2014)
  25. Predictors of outcome for anal fistula surgery. 7th Biennial Congress of ASEAN Society of Colorectal Surgeons, Singapore (2014)
  26. Outcome of fistulotomy with primary sphincter repair for anal fistula. 7th Biennial Congress of ASEAN Society of Colorectal Surgeons, Singapore (2014)
  27. Endoscopic stenting of malignant colorectal obstruction. 3rd Colorectal Symposium, Hamad Medical Corporation, Doha, Qatar (2014)
  28. Transanal endoscopic microsurgical excision of rectal carcinoma. International Association of Surgeons, Gastroenterologists, and Oncologists Annual Conference, Vienna, Austria (2014)
  29. Surgical management of refractory ulcerative colitis. 7th Middle-East Gastroenterology Conference, Arab Health Congress, Dubai, United Arab Emirates (2015)
  30. Robotic excision of rectal cancer. 4th Emirates Oncology Conference, Abu Dhabi, United Arab Emirates (2015)
  31. Endoscopic submucosal resection of colorectal polyps. Al-Zahra Hospital 1st Annual Oncology Symposium, Dubai, United Arab Emirates (2017)
  32. Endoscopic resection of colorectal tumors. The 4th International Surgical Conference, Sharjah, United Arab Emirates (2017)
  33. Endoscopic submucosal resection of colorectal polyps. Al-Zahra Hospital 1st Annual General Surgery Symposium, Dubai, United Arab Emirates (2017)
  34. The impact of the RMS Titanic: from maritime navigation to surgical quality of care. Al-Zahra Hospital Grand Rounds, Dubai, United Arab Emirates (2017)
  35. Surgical management of fecal incontinence, Arab Health Annual Meeting, Dubai, United Arab Emirates (2018)
  36. Endoscopic options for colorectal cancer, Arab Health Annual Meeting, Dubai, United Arab Emirates (2018)
  37. Surgical therapy for abdominal crohn’s disease. Coloproctological Symposium, Dusseldorf, Germany (2018)
  38. Current surgical concept for rectal prolapse. Coloproctological Symposium, Dusseldorf, Germany (2018)
  39. Surgical management of crohn’s disease. The 5th International Surgical Conference, Sharjah, United Arab Emirates (2018)
  40. Colorectal Surgery: an overview. Emirates Airlines Medical Grand Rounds, Dubai, United Arab Emirates (2018)
  41. Current management of fecal incontinence. Al-Zahra Hospital 1st Annual Colorectal Symposium, Dubai, United Arab Emirates (2018)
  42. Minimally invasive proctologic procedures: hemorrhoids and fistula. Al-Zahra Hospital 1st Annual Colorectal Symposium, Dubai, United Arab Emirates (2018)
  43. Crohn’s disease: when should you call a surgeon. Al-Zahra Hospital 1st Annual Colorectal Symposium, Dubai, United Arab Emirates (2018)
  44. Colorectal surgery emergencies: diverticulitis. 14th Emirates Critical Care Conference, Dubai, United Arab Emirates (2018)
  45. Fecal incontinence: what’s new in 2018. Al-Zahra Hospital Grand Rounds, Dubai, United Arab Emirates (2018)
  46. The future of anal fistula surgery. Philippine College of Surgeons 74th Annual Clinical Congress, Mandaluyong City, Philippines (2018)
  47. Fistulotomy with immediate sphincter reconstruction for complex anal fistula. Philippine College of Surgeons 74th Annual Clinical Congress, Mandaluyong City, Philippines (2018)
  48. The impact of the RMS Titanic: from maritime navigation to surgical quality of care. Philippine College of Surgeons 74th Annual Clinical Congress, Mandaluyong City, Philippines (2018)
  49. Reoperative pelvic surgery: the 10 commandments. Philippine College of Surgeons 74th Annual Clinical Congress, Mandaluyong City, Philippines (2018)
  50. Management of complicated rectourethral and rectovaginal fistula. 2018 Shanghai Lujiazui International Colorectal Week, Shanghai, China (2018)
  51. Paget’s disease of the anus: local resection or radical surgery? 2018 Shanghai Lujiazui International Colorectal Week, Shanghai, China (2018)
  52. Ileostomy or colostomy? When does a patient need a stoma? 1st Emirates Stoma Care, Abu Dhabi, United Arab Emirates (2018)
  53. Propofol administration by anesthesiologist vs. endoscopist during colonoscopy: does it make a difference? Philippine General Hospital, Manila, Philippines (2018)
  54. Pelvic endometriosis with bowel involvement: the colorectal perspective. Emirates Endometriosis League 5th Conference, Dubai, United Arab Emirates (2019)
  55. Resection techniques: endoscopic mucosal resection (EMR) and endoscopic submucosal dissection (ESD). Philippine Society of Colorectal Surgeons Pre-Congress Advanced Course on Endoscopic Resection for Surgeons: Image-Enhanced Endoscopy with ESD and EMR. Manila, Philippines (2019)
  56. Excellence in Colorectal Surgery Lectureship. From Mayo Clinic to the world: my resident journey with Dr. Keith Kelly. Philippine Society of Colon and Rectal Surgeons 10th Annual Clinical Congress, Manila, Philippines (2019)
  57. The gracilis flap for rectourethral and rectovaginal fistula. Philippine Society of Colon and Rectal Surgeons 10th Annual Clinical Congress, Manila, Philippines (2019)
  58. The endorectal advancement flap for complex anal fistula: technical steps and results. Philippine Society of Colon and Rectal Surgeons 10th Annual Clinical Congress, Manila, Philippines (2019)
  59. How to successfully navigate through the world of minimally invasive surgery. University of the Philippines, Manila, Philippines (2019)
  60. Crohn’s disease: when to call a surgeon. Al-Zahra 1st Annual Gastroenterology Symposium, Dubai, United Arab Emirates (2019)
  61. Radiation proctitis: an update. 68th Meeting of the Brazilian Society of Coloproctology, Fortaleza, Brazil (2019)
  62. Endoscopic resection of large colorectal polyps: an alternative to colectomy? 68th Meeting of the Brazilian Society of Coloproctology, Fortaleza, Brazil (2019)
  63. Reoperative pelvic surgery: the 10 commandments. 68th Meeting of the Brazilian Society of Coloproctology, Fortaleza, Brazil (2019)
  64. Endorectal advancement flap for complex anal fistula: technical steps and results. 68th Meeting of the Brazilian Society of Coloproctology, Fortaleza, Brazil (2019)
  65. Endoscopic resection of colorectal neoplasm: an alternative to surgical resection? Al-Zahra Hospital 2nd Annual Colorectal Symposium, Dubai, United Arab Emirates (2019)
  66. Anal pain: what to do when it hurts too much? Al-Zahra Hospital 2nd Annual Colorectal Symposium, Dubai, United Arab Emirates (2019)
  67. Minimally invasive proctologic surgery: the quest for painless surgery. Colon and Rectal Surgery Session. 19th Annual Surgery Conference, Arab Health Congress, Dubai, United Arab Emirates (2020)
  68. Robotic colorectal surgery: hype or the dawn of a new era. Al-Zahra Hospital 4th Annual Oncology Symposium, Dubai, United Arab Emirates (2020)
  69. Colorectal Cancer: The UAE experience. 20th Annual Surgery Conference, Arab Health Congress, Dubai, United Arab Emirates (2021)
  70. Endorectal flap for anal fistula. International Summit for Treatment of Anal Fistula, Panchkula, India (2021) [Virtual meeting]
  71. Ileostomy or colostomy? When does a patient need a stoma? Ostomy Awareness Day, Al-Zahra Hospital, Dubai, United Arab Emirates (2021)
  72. Surgery vs. stent for malignant large bowel obstruction. 57th Mastery in Surgery Annual Convention. Resolving controversies in colorectal surgery through experience, expertise, and evidence. University of Philippines and Philippine General Hospital, Manila, Philippines (2021) [Virtual meeting]
  73. Anal fistula: the classification and imaging impact on the treatment algorithm. 1st Turkish International Colorectal Surgery Congress, XVIIIth Turkish Colon and Rectal Surgery Congress, XIth Colorectal Surgery Nursing Congress, Antalya, Turkey (2021)
  74. The impact of the RMS Titanic sinking: from maritime navigation to surgical quality of care. 1st Turkish International Colorectal Surgery Congress, XVIIIth Turkish Colon and Rectal Surgery Congress, XIth Colorectal Surgery Nursing Congress, Antalya, Turkey (2021)
  75. Anal fistula: causes of operative failure. 4th Annual Proctology Meeting of the Association of Coloproctologists of Russia, Moscow, Russia (2021) [Virtual meeting]
  76. Endoscopic resection of colorectal polyps and early neoplastic lesions. Advanced Surgical Approach to Colorectal Tumors. Al-Zahra Hospital, Dubai, United Arab Emirates (2021)
  77. Hemorrhoids from the American perspective. International Coloproctological Symposium, Dusseldorf, Germany (2022) [Virtual meeting]
  78. Endoscopic stenting of colorectal stricture. 16th International Congress of Minimally Invasive Surgery and Techniques, Tehran, Iran (2022) [Virtual meeting]
  79. Endoscopic resection of colorectal neoplasms. 16th International Congress of Minimally Invasive Surgery and Techniques, Tehran, Iran (2022) [Virtual meeting]
  80. Work-up and medical management options for fecal incontinence. Fecal incontinence treatment in 21st century masterclass. Russian Society of Colorectal Surgeons, Moscow, Russia (2022) [Virtual meeting]
  81. Anal fistula: the classification and imaging impact on the treatment algorithm. Philippine Society of Colon and Rectal Surgeons, Manila, Philippines (2022) [Virtual meeting]
  82. Anal fistula: causes of operative failure. Philippine Society of Colon and Rectal Surgeons, Manila, Philippines (2022) [Virtual meeting]
  83. Minimally invasive pearls for the young surgeon. The Philippine Association of Laparoscopic and Endoscopic Surgeons Annual Meeting, Manila, Philippines (2022) [Virtual meeting]
  84. Endoscopic dilation of colorectal strictures: when and how. University of Philippines – Philippine General Hospital Post-Graduate Course Collaborative Management of Surgical Patients, Manila, Philippines (2022) [Virtual meeting]

Last update August 12, 2022

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United States: Local – Regional – National

  1. Nutrition and health. Invited lecturer, Emory University, Atlanta, Georgia (2000)
  2. Imaging of small bowel hematoma. Radiology Grand Rounds, Mayo Clinic, Scottsdale, Arizona (2001)
  3. Management of splenic trauma. Surgical Grand Rounds, Mayo Clinic, Scottsdale, Arizona (2001)
  4. Carcinoid tumors of the GI tract. Surgical Grand Rounds, Mayo Clinic, Scottsdale, Arizona (2002)
  5. Colonic stents: indications and outcome. Annual Meeting of the Northeastern Society of Colorectal Surgeons, Palm Beach, Florida (2002)
  6. Fecal incontinence. Surgical Grand Rounds, Kaiser Permanente, Panaroma City, California (2003)
  7. Anorectal physiologic testing. Urology Grand Rounds, Kaiser Permanente, Los Angeles, California (2003)
  8. Hemorrhoids. Surgical Grand Rounds. Kaiser Permanente, Los Angeles, California (2003)
  9. Pilonidal disease: an update. Surgical Grand Rounds, Kaiser Permanente, Los Angeles, California (2004)
  10. Advances in colon and rectal surgery. Anesthesia Grand Rounds, Kaiser Permanente, Los Angeles, California (2004)
  11. Anorectal and pelvic anatomy. Surgical Grand Rounds, Kaiser Permanente, Los Angeles, California (2004)
  12. Colon and Rectal Surgery in 2004. Internal Medicine Grand Rounds, Kaiser Permanente, Los Angeles, California (2004)
  13. Surgical treatment of fecal incontinence. Surgical Grand Rounds, Mayo Clinic, Scottsdale, Arizona (2004)
  14. Fecal incontinence: what is the best treatment? Kaiser Permanente 42nd Surgical Symposium, Rancho Bernardo, California (2004)
  15. Fecal incontinence: a surgeon’s prespective. Kaiser Permanente Annual Urology Symposium, Laguna Beach, California (2004)
  16. Benign anorectal disorders. Fred Miyazaki Kaiser Permanente National Pelvic Floor Disorders Symposium, Huntington Beach, California (2005)
  17. Surgical options for colorectal malignancies. Raven Biotechnology, San Francisco, California (2005)
  18. Rectal prolapse. Surgical Grand Rounds, Kaiser Permanente, Los Angeles, California (2005)
  19. Endoluminal colonic stents for malignancy. Radiation Oncology Grand Rounds, Kaiser Permanente, Los Angeles, California (2005)
  20. Treatment options for colonic obstruction. Oncology Grand Rounds, Kaiser Permanente, West Los Angeles, California (2005)
  21. Update in Colon and Rectal Surgery. Physician Forum, Kaiser Permanente, Los Angeles, California (2005)
  22. Laparoscopic colon and rectal surgery. Surgical Nursing Rounds, Kaiser Permanente, Los Angeles, California (2005)
  23. Management of fecal incontinence. Gastroenterology Grand Rounds, Kaiser Permanente, Los Angeles, California (2005)
  24. Surgical options for fistula in ano. Surgery Grand Rounds, Kaiser Permanente, Los Angeles, California (2005)
  25. Surgical approaches for rectal prolapse. Fred Miyazaki Kaiser Permanente National Pelvic Floor Disorders Symposium, Napa Valley, California (2006)
  26. Surgical management of rectourethral fistula. Kaiser Permanente Urology Symposium, Newport Beach, California (2006)
  27. Minimally invasive colorectal surgery. Surgical Grand Rounds, University of California, Los Angeles, California (2006)
  28. Rectal cancer: surgical approaches, clinical issues, and the role of pathology in decision making. Kaiser Permanente Regional Pathology Grand Rounds, Los Angeles, California (2006)
  29. Laparoscopic colon and rectal surgery in 2006. Surgical Grand Rounds, Kaiser Permanente, Los Angeles, California (2006)
  30. Rectourethral fistula: surgical options and outcome. Surgical Grand Rounds, Mayo Clinic, Scottsdale, Arizona (2007)
  31. The Surgeon as the interventional endoscopist. Keynote speaker, Mayo Clinic 10th Annual Resident Education Day, Scottsdale, Arizona (2007)
  32. NOTES: the dawn of a new surgical era. National Arab American Medical Association Annual Meeting, Las Vegas, Nevada (2007)
  33. Surgical management of ulcerative colitis. Gastroenterology Grand Rounds, Kaiser Permanente, Los Angeles, California (2008)
  34. Anorectal anatomy and physiology. UCLA medical students basic science curriculum, Los Angeles, California (2008)
  35. Minimally Invasive Surgery. Anesthesia Grand Rounds, Kaiser Permanente, Los Angeles, California (2008)
  36. Acute diverticulitis: heretical new paradigms. Acute care surgery symposium, Southern California Chapter, American College of Surgeons, Los Angeles, California (2008)
  37. Clinical trials in surgery. Kaiser Permanente Radiation Oncology Grand Rounds, Los Angeles, California (2009)
  38. Colonic stenting as a definitive palliative therapy for malignant disease. Developments in colonic stenting. American Society of Colon and Rectal Surgeons Annual Meeting, Hollywood, Florida (2009)
  39. Anal sphincter repair following obstetrical injuries. Fred Miyazaki Kaiser Permanente National Pelvic Floor Disorders Symposium, Sonoma, California (2009)
  40. Pelvic anatomy: a surgical perspective. Surgical Grand Rounds, University of California, Los Angeles, California (2009)
  41. Endoscopic colonic stenting: indications and outcomes. New Frontiers in Minimally Invasive Gastrointestinal Surgery, Rancho Palos Verdes, California (2009)
  42. Transanal endoscopic microsurgery [TEM] for polyps and early cancers. New Frontiers in Minimally Invasive Gastrointestinal Surgery, Rancho Palos Verdes, California (2009)
  43. Sphincter repair following obstetrical injury. Kaiser Permanente Gastroenterology Grand Rounds, Los Angeles, California (2009)
  44. Cecal diverticulitis. American College of Surgeons 95th Annual Clinical Congress, Chicago, Illinois (2009)
  45. Are flaps a better option? American College of Surgeons 95th Annual Clinical Congress, Chicago, Illinois (2009)
  46. Perineal reconstruction for fecal incontinence. Kaiser Permanente Gynecology and Obstetrics Grand Rounds, Los Angeles, California (2009)
  47. Anorectal anatomy and physiology. UCLA medical students basic science curriculum, Los Angeles, California (2009)
  48. Components separation. Annual Meeting of the Southern California Chapter, American College of Surgeons, Santa Barbara, California (2010)
  49. Colonic diverticulitis: operate or wait? Surgical Frontiers, Lake Tahoe, California (2010)
  50. Colorectal surgery updates: endoscopy and complex anorectal fistula repair? Surgical Frontiers, Lake Tahoe, California (2010)
  51. Laparoscopic resection of rectal cancer: better for the patient and the surgeon. Kaiser Permanente 6th National Surgical Symposium, Monterrey, California (2010)
  52. Diabetic control in colorectal surgery. American Society of Colon and Rectal Surgery Annual Meeting, Minneapolis, Minnesota (2010)
  53. Controversies in the treatment of diverticulitis. Kaiser Permanente Gastroenterology Grand Rounds, Los Angeles, California (2010)
  54. Neoadjuvant vs adjuvant therapy for rectal cancer: when and which one is better? Southern California Chapter, American College of Surgeons Annual Meeting, Santa Barbara, California (2011)
  55. Reducing Mortality from Colon Cancer: What Can the Surgeon Do? Preoperative staging. American College of Surgeons 97th Annual Clinical Congress, San Francisco, California (2011)
  56. Stenting of colorectal strictures. American College of Surgeons 97th Annual Clinical Congress, San Francisco, California (2011)
  57. Anorectal anatomy and physiology. UCLA medical students basic science curriculum, Los Angeles, California (2011)
  58. Management of perirectal abscess: just drain it? Southern California Chapter, American College of Surgeons Annual Meeting, Santa Barbara, California (2012)
  59. Predictors of failure and complications following fistula surgery. 23rd Annual Colorectal Disease Symposium, Fort Lauderdale, Florida (2012)
  60. Long-term results of endoscopic stenting. 23rd Annual Colorectal Disease Symposium, Fort Lauderdale, Florida (2012)
  61. Managing rectourethral fistulas. 23rd Annual Colorectal Disease Symposium, Fort Lauderdale, Florida (2012)
  62. Obstructing colon cancer: stent and decompress or surgery first? 3rd Annual Controversies in Colon and Rectal Cancer Treatment, University of Chicago, Chicago, Illinois (2012)
  63. The TME specimen as a guide for laparoscopic and robotic quality assessment. SAGES, San Diego, California (2012)
  64. Benign anal disorders. Internal Medicine Grand Rounds, Kaiser Permanente, Los Angeles, California (2012)
  65. Endoscopic stenting for malignant colorectal obstruction. Radiation Oncology Grand Rounds, Kaiser Permanente, Los Angeles, California (2012)
  66. Endoscopic management of large bowel obstruction. Gastroenterology Grand Rounds, Kaiser Permanente, Los Angeles, California (2012)
  67. Anal dysplasia and cancer. Family Medicine Grand Rounds, Kaiser Permanente, Los Angeles, California (2012)
  68. Anorectal anatomy and physiology. UCLA medical students basic science curriculum, Los Angeles, California (2012)
  69. Stenting of colorectal strictures. American College of Surgeons 98th Annual Clinical Congress, Chicago, Illinois (2012)
  70. Endoscopic stenting: what I learned along the way. Visiting Professorship. Cleveland Clinic Florida, Weston, Florida (2012)
  71. Robotic rectal surgery: hype or reality? Visiting Professorship. Cleveland Clinic Florida, Weston, Florida (2012)
  72. ACS NSQIP’s impact on quality and outcome. Visiting Professorship. Cleveland Clinic Florida, Weston, Florida (2012)
  73. Endoscopic colorectal stenting: why should surgeons get involved? Southern California Chapter, American College of Surgeons Annual Meeting, Santa Barbara, California (2013)
  74. Quality and outcome databases. General Surgery Grand Rounds, Kaiser Permanente, Los Angeles, California (2013)
  75. The impact of the RMS Titanic: from maritime navigation to surgical quality of care and NSQIP. American College of Surgeons NSQIP Annual Conference, San Diego, California (2013)
  76. Stenting of colorectal strictures. American College of Surgeons 99th Annual Clinical Congress, Washington, DC (2013)
  77. Endoscopic submucosal resection. The 76th Annual University of Minnesota Principles of Colon and Rectal Surgery Course, Minneapolis, Minnesota (2013)
  78. Malignant large bowel obstruction: stents vs. surgery. The 76th Annual University of Minnesota Principles of Colon and Rectal Surgery Course, Minneapolis, Minnesota (2013)
  79. The impact of the RMS Titanic: from maritime navigation to surgical quality of care. Essentia Institute of Rural Medicine, Duluth, Minnesota (2013)
  80. Dealing with rectourethral fistulas. American Society of Colon and Rectal Surgery Annual Meeting, Fort Lauderdale, Florida (2014)
  81. The impact of the RMS Titanic: from maritime navigation to surgical quality of care and NSQIP. Cleveland Clinic Quality Forum, Cleveland, Ohio (2014)
  82. Endoscopic stenting: a decade of learning. Colorectal Surgery Grand Round, Cleveland Clinic, Cleveland, Ohio (2014)
  83. The impact of the RMS Titanic: from maritime navigation to surgical quality of care. Hawaii Safer Care and Surgical Unit Safety Program Collaborative, Honolulu, Hawaii (2014)
  84. Stenting of malignant colorectal strictures. American College of Surgeons 100th Annual Clinical Congress, San Francisco, California (2014)
  85. Fistulotomy with primary sphincter repair. International Colorectal Disease Symposium, 26th Jagelman/36th Turnbull, Fort Lauderdale, Florida (2015)
  86. Technical tips for endoluminal stenting. American Society of Colon and Rectal Surgeons Annual Meeting, Boston, Massachusetts (2015)
  87. Practical tips for effective scientific manuscript writing. Colorectal Surgery Research Fellows Meeting, Cleveland Clinic, Cleveland, Ohio (2015)
  88. The impact of anti-TNF agents on surgical outcomes. International Colorectal Disease Symposium, 27th Jagelman/37th Turnbull, Boca Raton, Florida (2016)
  89. The best operations for rectal prolapse are perineal approaches. International Colorectal Disease Symposium, 27th Jagelman/37th Turnbull, Boca Raton, Florida (2016)
  90. Stenting of malignant colorectal strictures. American College of Surgeons 102nd Annual Clinical Congress, Washington, DC (2016)
  91. Management of malignant obstruction. International Colorectal Disease Symposium, 28th Jagelman/38th Turnbull, Boca Raton, Florida (2017)
  92. Endorectal advancement flap: when and how for rectourethral fistula. International Colorectal Disease Symposium, 28th Jagelman/38th Turnbull, Boca Raton, Florida (2017)
  93. Endoscopic stenting: a decade experience. International Colorectal Disease Symposium, 28th Jagelman/38th Turnbull, Boca Raton, Florida (2017)
  94. The future of anal fistula treatment. American Society of Colon and Rectal Surgeons/Tripartite Annual Meeting, Seattle, Washington (2017)
  95. Stenting of malignant colorectal strictures. American College of Surgeons 103rd Annual Clinical Congress, San Diego, California (2017)
  96. Complex rectal fistulas: the gracilis muscle and more. American Society of Colon and Rectal Surgeons Annual Meeting, Nashville, Tennessee (2018)
  97. From Mayo Clinic to the world: my resident journey with Dr. Keith Kelly. Mayo Clinic Priestley Society Annual Meeting, Boston, Massachusetts (2018)
  98. Stenting of malignant colorectal strictures. American College of Surgeons 104th Annual Clinical Congress, Boston, Massachusetts (2018)
  99. Stenting of malignant colorectal strictures. American College of Surgeons 105th Annual Clinical Congress, San Francisco, California (2019)
  100. To stretch or not to stretch: colonoscopic balloon dilation. Masters in Flexible Endoscopy: Lower GI endoscopy. SAGES, Cleveland, Ohio (2020) [Virtual meeting]
  101. Harry Bacon, MD, Lectureship. Climbing Mount Kilimanjaro: reflections from a surgeon’s journey. American Society of Colon and Rectal Surgeons Annual Meeting, San Diego, California (2021) [virtual meeting]
  102. Stenting of malignant colorectal strictures. American College of Surgeons 107th Annual Clinical Congress, Washington, DC (2021) [virtual meeting]
  103. Management of colorectal strictures: from balloon dilation to stent placement. American College of Surgeons 108th Annual Clinical Congress, San Diego, California (2022)
  104. Stenting of Colorectal Strictures. American College of Surgeons 108th Annual Clinical Congress, San Diego, California (2022)

Last update August 12, 2022

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Meet The Professor Session

  1. Optimizing outcomes in laparoscopic surgery. The 76th Annual University of Minnesota Principles of Colon and Rectal Surgery Course, Minneapolis, Minnesota (2013)
  2. Anorectal fistula. American Society of Colon and Rectal Surgery Annual Meeting, Hollywood, Florida (2014)
  3. Management of T1 rectal cancer. American Society of Colon and Rectal Surgery Annual Meeting, Boston, Massachusetts (2015)
  4. Difficult benign colorectal and anorectal conditions. Philippine Society of Colon and Rectal Surgeons 10th Annual Congress, Manila, Philippines (2019)
  5. Submitting a scientific paper to Diseases of Colon and Rectum [DCR]: pearls for success. 1st Turkish International Colorectal Surgery Congress, XVIIIth Turkish Colon and Rectal Surgery Congress, XIth Colorectal Surgery Nursing Congress, Antalya, Turkey (2021)

Last update August 12, 2022

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Academic Honors and Professional Awards

  1. Emory University Dean’s list (1985, 1986, 1987, 1988, 1989)
  2. Academic All-American (1986)
  3. All-American Scholars (1987)
  4. Who’s Who (1987)
  5. Phi Lambda Upsilon (1988)
  6. Omicron Delta Kappa (1988)
  7. Alpha Epsilon Delta (1988)
  8. Scholastic All-American (1989)
  9. Phi Beta Kappa (1989)
  10. American Federation for Clinical Research Medical Student Award for Excellence (1992, 1993)
  11. Stanford University School of Medicine Dean’s Award for Distinguished Research (1994)
  12. Mayo Brothers Distinguished Fellowship Award, Mayo Clinic Foundation (2001)
  13. Certificate of Recognition, University of Southern California Keck School of Medicine (2004)
  14. John Winkley Teaching Excellence Award, Kaiser Foundation Hospital (2004, 2008)
  15. Merit Award, Department of Surgery, Kaiser Permanente, Los Angeles (2004, 2005, 2006, 2007, 2008, 2009)
  16. American College of Surgeons Young Surgeon Travel Award, Southern California Chapter (2005)
  17. Certificate of Appreciation, Kaiser Permanente Center for Medical Education, Los Angeles (2006)
  18. American Medical Association Physician Recognition Award (2007)
  19. Distinguished Merit Award, Southern California Permanente Medical Group (2007)
  20. Extra Mile Award, Kaiser Permanente, Los Angeles (2008)
  21. Regional Research Award, Southern California Permanente Medical Group (2009)
  22. Southern California Permanente Medical Group Clinical Trials Award (2009)
  23. Los Angeles Magazine Top Doctors (2012, 2013)
  24. Super Doctors Southern California (2012, 2013, 2014, 2015)
  25. America’s Most Compassionate Doctors (2012)
  26. The American College of Surgeons /American Society of Colon and Rectal Surgeons Leadership Program in Health Policy and Management Scholarship Award (2013)
  27. America’s Top Surgeons (2013)
  28. Appreciation Award, Cleveland Clinic Abu Dhabi, United Arab Emirates (2014)
  29. Caregiver Celebrations Excellence Award, Cleveland Clinic Abu Dhabi, United Arab Emirates (2015)

Last update August 12, 2022

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