title: Pneumoperitoneum associated with perforated appendicitis.
abstract: Perforated appendicitis is sometimes accompanied by pneumoperitoneum, often localized beneath the diaphragmatic dome. This may lead to very dangerous diagnstoic errors, which every roentgenologist and surgeon should be aware of. A historical review is followed by three case reports.
mesh_terms: D000208:Acute Disease; D000328:Adult; D000368:Aged; D001064:Appendicitis / Q000150:complications* / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D007416:Intestinal Perforation / Q000150:complications* / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged; D011027:Pneumoperitoneum / Q000000981:diagnostic imaging / Q000209:etiology*; D011859:Radiography