title: [Perforations of duodenal ulcers at atypical sites].
mesh_terms: D000368:Aged; D003951:Diagnostic Errors; D004381:Duodenal Ulcer / Q000175:diagnosis*; D006801:Humans; D008297:Male; D010439:Peptic Ulcer Perforation / Q000175:diagnosis*
vernacular_title: O perforatsiiakh atipichno raspolozhennykh iazv dvenadtsatiperstnoĭ kishki.