title: Shoulder pain offers clue in difficult assessment.
mesh_terms: D000328:Adult; D004381:Duodenal Ulcer / Q000150:complications*; D006801:Humans; D008297:Male; D009730:Nursing Assessment; D010146:Pain / Q000209:etiology*; D010439:Peptic Ulcer Perforation / Q000175:diagnosis*; D012782:Shoulder