Risk of developing metachronous advanced colorectal neoplasia after colonoscopic polypectomy in patients aged 30 to 39 and 40 to 49 years

Current guidelines define postpolypectomy surveillance intervals in patients aged ≥50 years. The risk of metachronous colorectal neoplasia (CRN) and the optimal postpolypectomy surveillance interval in patients aged <50 years remain unclear. We compared the risk of metachronous CRN in patients aged 30 to 39, 40 to 49, and ≥50 years old.

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