Sessile serrated polyps and colorectal cancer mortality

Beliefs about how colorectal cancer develops have evolved over time. Remaining sources of uncertainty include whether all cases develop from premalignant polyps, which polyps confer the highest risk, and what risk persists after polyp removal. Although polyp detection and removal can substantially reduce colorectal cancer mortality, 1 Atkin W Wooldrage K Parkin DM et al. Long term effects of once-only flexible sigmoidoscopy screening after 17...