Linked from
The 21 pages that link to Colonoscopy, each with the reason it gives.
Gastrointestinal bleedingRelated: It can locate and treat bleeding sources in the large intestine.
RectumRelated: The instrument passes through and allows direct inspection of the rectal lining.
CecumRelated: Reaching the cecum is a standard marker that the examination has traversed the colon.
ColonRelated: It allows direct inspection of the colon’s lining and removal of some polyps.