Effectiveness of Colonoscopy Screening vs Sigmoidoscopy Screening in Colorectal Cancer.

10 , 47 The incidence of proximal adenomas and cancers also shows an increasing trend with age. 48 Furthermore, compared with men, women appear to have a higher proportion of advanced adenoma and cancer in the proximal colon. 32 , 33 Overall, our assumptions likely entailed overestimation of the benefit of colonoscopy screening and hence provide an upper limit of what may be achieved with colonoscopy compared with sigmoidoscopy.

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