A Case of Laparoscopic Partial Gastrectomy for Foregut Duplication of the Stomach

Abstract

A 42-year-old man was referred to our hospital for a submucosal tumor at the gastric fornix. On upper gastrointestinal endoscopy, an elevated lesion covered with normal mucosa was seen at the gastric fornix showing a positive cushion sign. Abdominal computed tomography showed an irregular exophytic cystic lesion at the greater curvature of the gastric fornix with no solid lesion within. The preoperative clinical diagnosis was cystic gastric submucosal tumor, and laparoscopic partial gastrectomy was performed for both therapy and diagnosis. The cystic lesion was similar to the surrounding gastric wall. The inner layer epithelium showed the features of stomach and lung on immunohistochemical examination, and the pathological diagnosis of the resected lesion was foregut duplication of the stomach. As the clinical diagnosis of foregut duplication of the stomach has not been established, surgical resection is the only way to make a definitive diagnosis. Since adult duplication of the stomach has malignant potential and the possibility of hemorrhage, surgical resection of the lesion should be considered as one of the treatment options, and laparoscopic surgery is a good choice.