Colonoscopy is a procedure used to see inside the colon and rectum. Colonoscopy can detect inflamed tissue, ulcers, and abnormal growths. The procedure is used to look for early signs of colorectal cancer and can help doctors diagnose unexplained changes in bowel habits, abdominal pain, bleeding from the anus, and weight loss.
Colorectal cancer is most often referred to as colon cancer and is a type of cancer that is found in the large intestine (also called large bowel) and the rectum, which is the lower portion of the intestine that leads to the anus.
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