What Is Sigmoidoscopy?


Quick Answer

A sigmoidoscopy is a test done to check an individual for signs colon cancer. A sigmoid scope is a thin flexible tube with a light and a camera on the end. The lower area of the sigmoid colon and rectum are viewed for polyps, according to the American Cancer Society.

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Full Answer

During the test, which takes 10 to 20 minutes, the end of the scope is gently eased into the rectum. The doctor views the area on a TV or computer screen. Normally, medication is not need for a sigmoidoscopy, which causes only slight discomfort for most people, according to the American Cancer Society.

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