[A Case of Gastric Endocrine Carcinoma].

The patient was an 80-year-old man, hospitalized with poor appetite, light-headedness, and black stool. Esophagogastroduodenoscopy showed an ulcerative lesion in cardia, and the tumor was diagnosed as gastric cancer using the biopsy specimens. The patient underwent a gastrectomy with D1-node dissection. Pathologically, the small tumor cells infiltrated the muscularis propria of the gastric wall, and these tumor cells immunohistochemically showed a positive reaction for synaptophysin. Therefore, the tumor was diagnosed as small cell-neuroendocrine carcinoma of the stomach. Metastasis was not observed in regional lymph nodes, and the TNM classification was defined as pStage ⅠB. After surgery, adjuvant chemotherapy was not performed. The patient is well without recurrence for more than 7 months after the surgery. We experienced and report a case of gastric endocrine cell carcinoma that underwent resection and provide a review of the literature.