Transanal Endoscopic Surgery

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.


What is transanal endoscopic surgery?

Transanal endoscopic surgery is a minimally invasive procedure that enables the surgeon to treat conditions without the need to make any incision on the body.  The anus, a natural orifice, is used as an entry site to gain access to the large bowel (the colon and rectum) [Figure 1].

Figure 1 – The large bowel


Specialized rigid or flexible instruments are used to perform the procedure inside the large bowel [Figure 2].  The surgeon uses specialized equipment including a high definition television screen [Figure 3].  It is scar free surgery with the advantages of faster recovery and less complications.  Most patients are discharged the same or following day and can resume work after a short recovery period.

Figure 2 – Dr. Maher Abbas performing transanal endoscopic surgery

Figure 3 – High definition television screen usage during transanal endoscopic surgery


What conditions are treated with transanal endoscopic surgery?

Some of the indications for transanal endoscopic surgery include relieving blockage, treating bleeding, and removing tumors.  Conditions that can be treated include the following:

  • Colorectal fistula
  • Early colorectal cancer
  • Colorectal polyps
  • Narrowing of the colon and rectum
  • Tumors of the colon and rectum

Transanal endoscopic surgery consists of numerous procedures including Transanal Endoscopic Microsurgery (TEM) or related techniques such as TAMIS and TEO, and therapeutic endoscopy procedures such Endoscopic Mucosal Resection (EMR), Endoscopic Submucosal Resection (ESD or ESR), endoscopic stent placement, and endoscopic dilation/treatment of strictures (narrowing).


Who is a candidate for transanal endoscopic surgery?

Transanal endoscopic surgery is an appropriate treatment for a select group of patients.  Dr. Maher Abbas needs to assess each case taking into consideration the patient’s related factors and disease features in order to determine the most effective treatment for an individual patient.


Why seek expert care with a board certified proctologist and colorectal surgeon?

Transanal endoscopic surgery is an advanced surgical procedure.  The expertise of the doctor is critical in order to ensure the best results and minimize the risk of recurrence, non-healing, and infection.

Dr. Maher Abbas is an expert in the treatment of diseases of the colon, rectum, and anus.  With over a 30-year career in the USA, he has completed advanced training in Proctology and is American Board Certified in Colon and Rectal Surgery.  Dr. Maher Abbas is a Fellow of the American Society of Colon and Rectal Surgeons.

If you would like to schedule a consultation with Dr. Maher Abbas to discuss your case, click here.

Contact Us

    Preferred location for appointment
    King’s College Hospital London, DubaiAl-Zahra Hospital, DubaiNo location preference

    Appointment details
    Need urgent appointment (within 24-72 hours)Need routine appointmentRequest virtual online consultation (international patients only)