Introduction
Gastric neoplasm is a very common
digestive disease, and different types of tumors are treated
differently.[1] Ectopic duodenal mucosa with adenomatous hyperplasia
in the stomach has not been reported previously. We encountered a case
of intragastric tumor in September 2022, which was confirmed by
pathology as ectopic duodenal mucosa with adenomatous hyperplasia in the
stomach. According to our experience, a case of diagnosis and treatment
of this disease reported with the literature review.