title: Gastric outlet obstruction due to a gallstone.
mesh_terms: D000368:Aged; D002769:Cholelithiasis / Q000150:complications* / Q000000981:diagnostic imaging; D004381:Duodenal Ulcer / Q000150:complications; D005260:Female; D006801:Humans; D011707:Pyloric Stenosis / Q000209:etiology*; D011859:Radiography