A 20-month-old male with a gastric teratoma is reported. He was admitted to Osaka University Hospital with progressive upper abdominal tumor. Laboratory data showed slightly elevated plasma AFP and LDH levels. Calcified hepatic teratoma was suspected by preoperative examinations. At operation, the tumor was located at the lesser curvature and fused to the gastric wall. The tumor was considered to be of gastric origin. Tumor was removed together with the muscular layer of the stomach. Histological examination revealed combined teratoma with york sac tumor. Postoperative chemotherapy was not given. Since operation, he has been healthy without signs of recurrence for these 3 years. And plasma AFP level remains low. 101 cases of gastric teratoma were reviewed in the literature.
