What Does A Colonoscopy Check For?

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What Is It?

Colonoscopy is an examination of your complete colon, or large intestine. Colonoscopy is similar to another type of exam called a sigmoidoscopy, which looks at only the last part of the colon. To perform a colonoscopy, your doctor uses a flexible viewing tube with lenses, a small TV camera and a light on one end. Through bundles of flexible glass fibers (fiber-optic technology) and a small video computer chip, the colonoscope scans the inside of your colon and transmits images to a...

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