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Colonoscopy (koh-luh-NAH-skuh-pee) is a procedure used to diagnose the causes of unexplained changes in bowel habits, blood in stool and blood from the rectum. It is also used to look for early signs of cancer in the colon and rectum A Colonoscopy lets the clinician look inside the entire large intestine, from the lowest part, the rectum, all the way up through the colon to the lower end of the small intestine. Colonoscopy enables the clinician to see inflamed tissue, abnormal growths, ulcers, bleeding, and muscle spasms. Sometimes a small piece or pieces of tissue of will be removed during the procedure for later testing.

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