RESUMO
Gastritis cystica profunda (GCP) is a rare disease in which mature glandular epithelium extends into the muscularis mucosae or below. GCP lesions mainly develop at the gastroenterostomy stomas. These lesions show malignant histologic features such as metaplastic and even dysplastic alteration, however they usually exhibit benign behavior. We report a case of a patient with GCP who had not previously undergone gastric surgery. A 63-year-old woman visited our hospital for anorexia and epigastric discomfort. The esophagogastroduodenoscopy revealed two polyps on the anterior wall of the greater curvature, antrum. The polyps were removed by snare polypectomy and the histology findings showed the character of a tubular adenoma and a hyperplastic polyp with an associated GCP.