Efficacy and safety of intensive endoscopic intervention for multiple duodenal adenomas in patients with familial adenomatous polyposis: A prospective cohort study.

Intensive endoscopic intervention, including new-generation procedures, showed significant downstaging with acceptable adverse events for MDA in FAP patients, even those with advanced-stage disease. Lesion selection for different resection techniques may be important for suitable and sustainable management of MDA in FAP patients (Trial Reg Num: UMIN000022525).