ABSTRACT
Hamartomatous polyps in the stomach have been described as gastric lesions of familial polyposis coli or not associated with polyposis coli. However, submucosal tumor-like lesion of the gastric hamartoma is very rare. We have experienced an unusual hamartoma in the stomach in a 69-year-old man. He was hospitalized with epigastric discomfort. Endoscopy revealed a submucosal mass at the greater curvature of the high body of the stomach. The resected mass measured 3 X 2 X 1.5 cm and was characterized by cystic dilation of glandular structures. The glandular structures consisted of various types of lining cells, including surface foveolar cell types, pyloric cell types and parietal-like cells, and irregularly arranged smooth muscle bundles and collagen fibers were noted. We report this unusual gastric hamartoma presenting as a submucosal tumor with a review of literatures.