Loading...
Surveillance colonoscopy for colorectal cancer (CRC) is recommended at intervals determined by the most advanced lesions at baseline examinations. Guidelines from international professional organizations are generally concordant with regards to surveillance for high-risk polyps, but they diverge for nonadvanced adenomas and serrated polyps, owing partly to sparse evidence.
To assess the risk for CRC according to polyp subtype, investigators conducted a retrospective cohort study of nearly 123,000 patients in the Nurses' Health Study 1, the Nurses' Health Study 2, or the Health Professionals Follow-Up Study who underwent flexible sigmoidoscopy or colonoscopy between 1989 and 2013.
At a median follow-up of 10 years, the CRC risks associated wit…