Concurrent occurrence of adenocarcinoma and neuroendocrine type small cell carcinoma in the ampulla of Vater / 대한내과학회지

Small cell carcinoma in the ampulla of Vater is rare, and the concurrent occurrence of adenocarcinoma and small cell carcinoma is extremely rare. We report the case of a double primary tumor, adenocarcinoma and small cell carcinoma, in the ampulla of Vater.