Endoscopically Resected Granular Cell Tumor of the Stomach

Abstract: We report a rare case of granular cell tumor of the stomach resected endoscopically. The patient was a 53‐year‐old man who visited our clinic because of a protruding lesion incidentally found by X‐ray examination of the stomach at a mass screening. Endoscopic examination revealed an apparent submucosal tumor at the anterior wall of the upper body of the stomach. An endoscopic ultrasonographic (EUS) study showed that the tumor was a hypoechoic lesion localized in the third layer (submucosal layer). On resection, a lesion measuring 6X5X3 mm was found to be localized in the submucosa. It was histologically diagnosed as granular cell tumor, which is quite uncommon in the stomach with only 44 cases having been reported to date.