Ampullary composite gangliocytoma/neuroma and neuroendocrine tumor (CoGNET), previously called ampullary gangliocytic paragangliomas (GP) are a rare entity, with only few reported cases in the literature. This is a multicentric retrospective cohort of patients treated with endoscopy or surgery for ampullary CoGNET. A literature review of ampullary CoGNET was also performed. Fifteen patients were included, mostly female (n=10) with a median age of 50 y.o. Patients were asymptomatic in 7 …