Proctoscopy

n. examination of the rectum; examination of the large intestines

Proctoscopy is a common medical procedure in which an instrument called a proctoscope (also known as a rectoscope) is used to examine the anal cavity, rectum or sigmoid colon. A proctoscope is a short (10in or 25 cm long), straight, rigid, hollow metal tube, and usually has a small light bulb mounted at the end. During proctoscopy, the proctoscope is lubricated and inserted into the rectum, and then the obturator is removed, allowing an unubstructed view of the interior of the rectal cavity. This procedure is normally done to inspect for hemorrhoids or rectal polyps and might be mildly uncomfortable as the proctoscope is inserted further into the rectum. Modern fibre-optic proctoscopes allow more extensive observation with less discomfort.
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Proctoscopy A procedurein which a thin tube containing a camera and a light is inserted into the rectum so that the doctor can visually inspect it. [more]Proctoscopy - Community and Resources

Noun
1. visual examination of the rectum and the end of the colon by means of a proctoscope
(hypernym) endoscopy

[prok-TOS -ko-pee]
An examination of the rectum using a thin, lighted tube called a proctoscope.