Colorectal Cancer Treatment

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

“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 15,000 operations and procedures experience, he provides state of the art treatment to his patients.



It is important to know that most patients with colorectal cancer do not have any family history of colon cancer or polyps. Therefore, it is very important to tell your doctor if you have any of the following symptoms which could indicate the presence of colorectal cancer, tumors, or polyps:

  • Abdominal pain or gas pains with or without vomiting
  • Anemia
  • Change in the stool caliber or narrowing of the stool
  • Change in your normal bowel habits
  • Constipation or diarrhea
  • Fatigue
  • Incomplete emptying of the bowel
  • Intestinal spasm with or without bloating
  • Rectal bleeding (bright red blood or dark blood)
  • Unexplained weight loss

It is important to note that most patients with early colorectal cancer or a precancerous lesion such as a polyp may have no symptoms at all. Dr. Abbas emphasizes to all his patients the need to undergo screening for colorectal cancer as per the recommended guidelines.


Colorectal cancer can be cured when caught in early stages. The main treatment modality for most patients is surgery although some patients with very early cancer or precancerous polyps can be treated with endoscopic removal without scars, a technique offered by Dr. Abbas. Surgery to remove the colorectal cancer along with the lymph nodes (glands) is necessary for a complete cure. Minimally invasive surgical techniques such as laparoscopic camera (keyhole) surgery and endoscopic surgery is offered by Dr. Abbas, a highly specialized surgeon and leader in minimally invasive surgery techniques and Laparoscopic Camera Surgery.

In addition to surgery, some patients with colorectal cancer may require chemotherapy which is typically offered after surgery although in a select group of patients it maybe given before surgery. Patient outcome is strongly associated with colorectal cancer stage at the time of diagnosis. Cancer confined to the lining of the colorectum is associated with the highest likelihood of success and cure. Early detection through screening methods like colonoscopy is crucial. Follow-up care after treatment for colorectal cancer is important. Even when the cancer appears to have been completely removed, the disease may recur. Dr. Abbas will monitor your recovery and check for cancer recurrence at specific intervals. Blood tests, clinical examinations and imaging tests may be performed based on the stage of the cancer.


  • Patients
  • International Colleagues

Los Angeles Magazine Top Doctors (2012, 2013)
Super Doctors Southern California (2012, 2013, 2014, 2015)
America’s Most Compassionate Doctors (2012)
America’s Top Surgeons (2013)

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