Published in:
01-05-2015 | Editorial
Detection of Advanced Neoplasia with FIT Versus Flexible Sigmoidoscopy Versus Colonoscopy: More Is More
Authors:
Robert E. Schoen, Jorge D. Machicado
Published in:
Digestive Diseases and Sciences
|
Issue 5/2015
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Excerpt
Flexible sigmoidoscopy visualizes the rectum and the sigmoid colon and, at times, the descending colon and even the splenic flexure. Unlike colonoscopy, it does not permit inspection of the entire transverse and the right colon. As a result, the efficacy of flexible sigmoidoscopy in preventing colorectal cancer in the proximal colon is dependent on identifying abnormalities in the distal colon, which will predict neoplasia in the proximal colon. Individuals with a negative flexible sigmoidoscopy do not go on to colonoscopy, so subjects with isolated proximal neoplasia are not detected and flexible sigmoidoscopy cannot prevent colorectal cancer in that circumstance. …