A colonoscopy is an internal examination of the colon (large intestine) and rectum, using an instrument called a colonoscope.
The colonoscope has a small camera attached to a flexible tube. Unlike sigmoidoscopy, which can only reach the lower third of the colon, colonoscopy examines the entire length of the colon.
You will lie on your left side with your knees drawn up toward your chest. After you have received a sedative and pain reliever, the colonoscope is...Read more
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