This quality assurance assessment from standard colonoscopy practices of 315 gastroenterologists in 49 endoscopic ambulatory surgery centers serving a wide geographical area provides support for the merits of a colonoscopy withdrawal time from the cecum of 6 minutes or more to improve the detection of polyps.
The equal risk of colon polyps in screening colonoscopies for age 40 to 49 and 50 to 59 years suggest reexamination of current recommendations for 50 years as the beginning age for screening colonoscopy. Further studies are needed to examine sex differences and cost effectiveness of screening colonoscopies beginning at age 40 years and to explore these factors as well in surveillance and symptom categories.
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