Spontaneous mediastinal emphysema from perforation of a duodenal ulcer.
D000368:Aged; D004381:Duodenal Ulcer / Q000150:complications*; D006801:Humans; D008297:Male; D008478:Mediastinal Emphysema / Q000209:etiology*; D010439:Peptic Ulcer Perforation / Q000150:complications*