title: [Rare cases of gastroduodenal ulcer penetration].
mesh_terms: D000328:Adult; D004381:Duodenal Ulcer / Q000473:pathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010439:Peptic Ulcer Perforation / Q000473:pathology*; D013276:Stomach Ulcer / Q000473:pathology*
vernacular_title: Redkie nabliudeniia penetratsii gastro-duodenal'nykh iazv