title: Report of a case of double pylorus.
mesh_terms: D000328:Adult; D004381:Duodenal Ulcer / Q000150:complications; D006801:Humans; D008297:Male; D008551:Melena / Q000209:etiology*; D011708:Pylorus / Q000002:abnormalities* / Q000000981:diagnostic imaging; D011859:Radiography