Proctosigmoidoscopy

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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Proctosigmoidoscopy /proc·to·sig·moi·dos·co·py/ examination of the rectum and sigmoid colon with the sigmoidoscope. proc·to·sig·moid·os·co·py n. [more]Proctosigmoidoscopy - Community and Resources

An examination of the rectum and the lower part of the colon using a thin, lighted instrument called a sigmoidoscope.

[PRAHK-toh-sig-moy-DAHS-kuh-pee]
An examination of the lower colon using a thin, lighted tube, called a sigmoidoscope, inserted into the rectum. Samples of tissues may be collected for examination under a microscope. Also called sigmoidoscopy.

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