Gastric inverted hyperplastic polyp with heterotopic pancreas: a rare case of submucosal eminence of the antrum.

A 43-year-old female underwent gastroscopy due to abdominal discomfort. Gastroscopy showed a submucosal eminence at the greater curvature of the antrum, with smooth surface mucosa, biopsy pathology suggests inflammation. We scheduled an endoscopic ultrasonography (EUS) for her. EUS revealed that the size of the lesion was about 8.7mm*10.8mm, with hypoechoic changes, which originated in the submucosa. Endoscopic submucosal dissection was performed, and representative photomicrographs of histologic sections were shown. The patient was diagnosed with gastric inverted hyperplastic polyp (GIHP) with heterotopic pancreas (HP).