Abstract
We report a rare case of early gastric cancer invaginating into the jejunum. A 88-year-old woman who had been diagnosed with a tumor of the small intestine admitted with anorexia and subsequent body weight loss. Abdominal computed tomography showed a tumor 8.5 cm in diameter in the jejunum and the distal stomach invaginating into the jejunum through the duodenum. Gastrointestinal endoscopy showed a multiple-nodule tumor 10 cm in diameter on the greater curvature of the lower gastric body invaginating into the inferior duodenal angle. The diagnosis was early gastric cancer -Type 0I SM- invaginating into the jejunum, necessitating laparoscopic partial gastrectomy. Histological examination showed well-differentiated tubular adenocarcinoma pT1 (M), ly0, v0, PM (-), DM (-). No report such as our case has been made, as far as we could review.