title: Combined occurrence of retropneumoperitoneum and pneumoperitoneum.
mesh_terms: D000328:Adult; D004241:Diverticulum, Colon / Q000150:complications*; D004646:Emphysema / Q000000981:diagnostic imaging / Q000209:etiology; D005260:Female; D006801:Humans; D007416:Intestinal Perforation / Q000150:complications*; D008875:Middle Aged; D010529:Peritoneal Cavity / Q000000981:diagnostic imaging; D011027:Pneumoperitoneum / Q000150:complications* / Q000000981:diagnostic imaging; D011183:Postoperative Complications; D011859:Radiography; D012187:Retroperitoneal Space; D014514:Ureteral Calculi / Q000601:surgery*