title: Pneumomediastinum in a case of perforated retroperitoneal hernia.
mesh_terms: D000368:Aged; D006547:Hernia / Q000150:complications*; D006801:Humans; D007415:Intestinal Obstruction / Q000000981:diagnostic imaging; D007416:Intestinal Perforation / Q000209:etiology*; D007421:Intestine, Small; D007813:Laparotomy; D008297:Male; D008478:Mediastinal Emphysema / Q000150:complications* / Q000000981:diagnostic imaging; D011859:Radiography; D012187:Retroperitoneal Space