The colonoscopy - The viewing of the inside of the colon using a flexible endoscope (fibre-optic instrument) known as a colonoscope, which is introduced through the anus and guided along the colon.
Colonoscopy is used to investigate symptoms such as bleeding from the anus and to detect physical abnormalities such as inflammation (see colitis), growths (see polyps), and cancer. Instruments may be passed through the colonoscope to take biopsy specimens or remove polyps. (See also endoscopy.)
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