Retrospective multicenter study on safety and long-term prognosis of endoscopic papillectomy for ampullary adenoma and adenocarcinoma - safety and long-term prognosis of endoscopic papillectomy for ampullary adenoma and adenocarcinoma

The pathological diagnoses of resected specimens confirmed adenoma in 62 and adenocarcinoma in 34 patients . Recurrent lesions were observed in 13 patients (13.5%) during a median follow-up of 3 months after EP. The predictive factors of recurrence were piecemeal resection, and nonnegative horizontal or vertical margin in univariate analysis. Nonnegative vertical margin was the only independent predictive factor of recurrence in the multivariate analysis.