title: Retroperitoneal extravasation from perforated duodenal ulcer.
mesh_terms: D000328:Adult; D000368:Aged; D004381:Duodenal Ulcer / Q000150:complications*; D005260:Female; D005766:Gastrointestinal Contents; D006801:Humans; D008297:Male; D008875:Middle Aged; D010439:Peptic Ulcer Perforation / Q000150:complications*; D012187:Retroperitoneal Space