A colon exam: This is a limited exam of the distal colon and rectum, typically done without sedation in an office setting. This has been used as part of colon cancer screening regimens, but has been largely replaced by colonoscopy which allows a complete colon exam.
Answered 9/28/2016
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Colonoscopy: It is the examination of the lower colon by using a mini video camera.
Answered 1/31/2013
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