sigmoidoscopy

n. visual examination of the interior of the colon using a sigmoidoscope (Medicine)

Sigmoidoscopy is the minimally invasive medical examination of the large intestine from the rectum through the last part of the colon. There are two types of sigmoidoscopy, flexible sigmoidoscopy, which uses a flexible endoscope, and rigid sigmoidoscopy, which uses a rigid device. Flexible sigmoidoscopy is today generally the preferred procedure. Sigmoidoscopy is a very effective screening tool. Sigmoidoscopy is similar but not the same as colonoscopy. Sigmoidoscopy only examines up to the sigmoid, the most distal part of the colon, while colonoscopy examines the whole large bowel.
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Sigmoidoscopy is a procedure by which a doctor inserts either a short and rigid or slightly longer and flexible fiber-optic [more]Sigmoidoscopy - Community and Resources

Noun
1. visual examination (with a sigmoidoscope) of the lower third of the colon in a search for polyps
(synonym) flexible sigmoidoscopy
(hypernym) endoscopy

Sigmoidoscopy is a procedure whereby a doctor inserts a viewing tube (sigmoidoscope) into the rectum for the purpose of inspecting the lower colon (sigmoid colon) and rectum. If an abnormal area is detected, a biopsy can be performed.