A case of composite adenoma-carcinoid tumor of the stomach

A case of composite adenoma-carcinoid tumor of the stomach is reported. The patient was a 54-year-old man. He was pointed out to have a gastric elevated lesion in 1993. In 1995, the endoscopic examination showed elevated lesion in the middle body of the stomach. The elevated lesion proved to be an adenoma by histopathologcal findings of the biopsy specimen. In 1997, the tumor was diagnosed as carcinoid by histopathologcal findings of the biopsy specimen. The tissue of the adenoma included typical cells of carcinoid, which were positive for Grimelius and Chromogranin A stains. The tumor proved to be a composite tumor containing both an adenomatous component and a carcinoid component by histopathologcal findings of the biopsy specimen. Histopathological findings of the endoscopic mucosal resected-specimen was adenoma and carcinoid was not included. We reported a case of composite adenoma-carcinoid tumor of the stomach and this case was rare and full of suggestion.