To assess the prognostic factors and investigate the optimal treatment of gastric mixed adenoneuroendocrine tumors. The NEC-dominant tumors and a Ki-67-positive index ≥60% were significantly associated with worse survival and a higher recurrence rate for gastric mixed adenoneuroendocrine carcinoma patients. | Prognostic factors for survival after curative resection of gastric mixed adenoneuroendocrine carcinoma A series of 80 patients