title: Acute perforation of duodenal diverticulum with roentgenographic demonstration of localized retroperitoneal emphysema.
mesh_terms: D000006:Abdomen, Acute / Q000209:etiology; D000368:Aged; D004240:Diverticulum / Q000150:complications*; D004378:Duodenal Diseases / Q000150:complications*; D004646:Emphysema / Q000000981:diagnostic imaging* / Q000209:etiology; D006801:Humans; D007416:Intestinal Perforation / Q000000981:diagnostic imaging / Q000209:etiology*; D008297:Male; D011859:Radiography; D012187:Retroperitoneal Space