Colonoscopy

   A colonoscopy is a test in which a colonoscope, (a long flexible tube) is inserted through the rectum in the large intestine. It allows the physician to examine the lining of the intestine and evaluate small abnormalities that would not have been detected by x-ray. If the doctor feels a suspicious area needs greater evaluation, a small piece of tissue (a biopsy) can be taken for examination in the laboratory.

    During the colonoscopy, abnormal growths (polyps) may be detected. These are usually removed because they can bleed or contain cancerous cells. To remove the polyp, your doctor will insert a wire loop (snare) through the colonoscope and remove the polyp, using an electrical device. This procedure is generally painless. The majority of polyps are benign, but removing polyps is an important way of preventing colon cancer. This procedure is usually well tolerated and many patients fall asleep during the examination. In some cases, it is impossible to pass the colonoscope to examine the entire colon. If that was to occur, the doctor will discuss other alternatives with you.

    After the colonoscopy, you will remain in the endoscopy area until the effects of the medications have sufficiently worn off. You may also feel bloated from the air that was introduced in your intestine during the examination. When you leave the clinic, you will be able to resume your usual diet.