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Proctosigmoidoscopy

Proctosigmoidoscopy (Proctoscopy,Sigmoidoscopy) is an internal examination of the lower large bowel (colon), using an instrument called a sigmoidoscope. The sigmoidoscope is a small camera attached to a flexible tube. Proctosigmoidoscopy (Proctoscopy,Sigmoidoscopy) is an internal examination of the lower large bowel (colon), using an instrument called a sigmoidoscope. The sigmoidoscope is a small camera attached to a flexible tube. It is inserted into the colon to examine the rectum, and the sigmoid and descending portions of the colon.

How the test is performed

During the test, you wear a hospital gown so that the lower half of your body is exposed. You are positioned on your left side with your knees drawn up toward your chest.

A gastroenterologist (a specialist in diseases of the digestive system) will gently insert a gloved and lubricated finger (or fingers) into the rectum to check for blockage and to dilate the anus. This is called a digital rectal examination.