Dictionary

colonoscopy

KOH-lon-OSS-kuh-pee

a procedure that uses a colonoscope to look inside the rectum and entire colon. The patient lies on a table while the doctor inserts the colonoscope into the anus. The camera on the colonoscope sends a video image of the intestinal lining to a computer screen. The test can show inflamed tissue, ulcers, and abnormal growths such as polyps.

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