title: Endoscopic recognition of duodenal ulcer penetrating to the liver.
mesh_terms: D000368:Aged; D004381:Duodenal Ulcer / Q000150:complications*; D005260:Female; D005773:Gastroscopy; D006801:Humans; D008107:Liver Diseases / Q000209:etiology; D010439:Peptic Ulcer Perforation / Q000175:diagnosis*