Management and Prognosis of Localized Duodenal Neuroendocrine Neoplasms

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Gay-Chevallier, Servane | de Mestier, Louis | Perinel, Julie | Forestier, Julien | Hervieu, Valérie | Ruszniewski, Philippe | Millot, Ingrid | Valette, Pierre-Jean | Pioche, Mathieu | Lombard-Bohas, Catherine | Subtil, Fabien | Adham, Mustapha | Walter, Thomas

Edité par CCSD ; Karger -

International audience. Introduction: The characteristics, prognostic factors, and management of duodenal neuroendocrine neoplasms (dNEN) are ill-defined, given their rarity. Whether nonsurgical management might be appropriate for patients with nonmetastatic dNEN and a good prognosis, as is the case for pancreatic NEN (pNEN), is unknown. We aimed to describe the management and prognosis of nonmetastatic dNEN patients. Methods: All consecutive patients with nonmetastatic dNEN managed between 1981 and 2018 in 2 expert centers were included. Recurrence-free survival (RFS) and factors associated with recurrence were estimated. Results: A total of 145 patients with dNEN were included. Twenty-eight patients with sporadic, nonfunctioning, small (median 7 mm) dNEN underwent endoscopic resection, with a 5-year RFS rate of 89.4%. Local recurrence occurred in 2 patients, who underwent surgery with no new events. The 5-year RFS rate was 87.9% in patients who underwent surgery. Upon univariate analysis, age, size, Ki67 index, and lymph node involvement (LN+) were significantly associated with worse RFS for all dNEN treated (endoscopy/surgery); multivariate analysis found that age, size, and LN+ were associated with worse RFS. Conclusion: Selected nonmetastatic dNEN had a favorable outcome, and a less invasive therapeutic strategy appeared more suitable than oncological surgery.

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