Colonoscopy is indicated to investigate change in the bowel habit, rectal bleeding, abdominal pain or weight loss.

While the patient is asleep, a  special thin flexible camera called a colonoscope is carefully inserted into the large intestine. A small camera transmits an image to a monitor, allowing close examination of the bowel
and intestinal lining. In order to get the best possible view the bowel needs to be cleaned out of all waste material the day before.

A colonoscopy can detect inflamed tissue, ulcers, diverticular disease, precancerous growth (polyps) or  bowel cancer. It is also used for the screening and surveillance for colorectal cancer  or removal of bowel polyps. Colonoscopy with removal of polyps is the best way to prevent bowel cancer.