Risk of advanced colorectal neoplasm by the proposed combined United States and United Kingdom risk stratification guidelines

/Aims: The United Kingdom (U.K.) guidelines for risk stratification after colon polypectomy differ from the United States (U.S.) guidelines in 2 ways: the U.K. guidelines consider ≥5 adenomas as high risk and do not consider histology (villous or high-grade dysplasia [HGD]) in assessment. Thus, we aimed to investigate the risk of advanced colorectal neoplasm (CRN) by categorized risk groups, considering both ≥5 adenomas and histology.

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