BO VEISLAND / SCIENCE PHOTO LIBRARY BO VEISLAND / SCIENCE PHOTO LIBRARY
Rectal polyp removal. Artwork showing the use of a colonoscope to remove a polyp or cyst from the inside of the rectum. The rectum (down left) is the final part of the digestive system. Part of the colon is also shown. Disorders such as colorectal cancer occur here. Polyps can be benign, but can be removed if they turn cancerous. A close-up of the polyp is at centre, with a close-up of its removal at right. A colonoscope, a type of endoscope, is a flexible tube inserted through the anus and used to examine and operate on the rectum and colon.
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