The colonoscopy or lower endoscopy is a procedure that allows the examination of the interior of the large intestine, starting at the anus and including the rectus, multiple segment of the colon until the union with the small intestine is reached. This procedure is done to diagnose any alterations of the colon including, but not limited to, polyps, ulcers, hemorrhage, tumors, cancer.

Endoscopic image of normal colon

Endoscopic Image of colon with diverticulum