title: Pneumoperitoneum on abdominal X-ray.
authors.affiliation: Accident and Emergency Department, City Hospital Birmingham B18 7QH.
authors.forename: Klara
authors.initials: K
authors.lastname: Raveendran
authors.forename: Mark
authors.initials: M
authors.lastname: Bagnall
mesh_terms: D001416:Back Pain / Q000209:etiology; D017809:Fatal Outcome; D005260:Female; D006801:Humans; D008875:Middle Aged; D011027:Pneumoperitoneum / Q000000981:diagnostic imaging*; D011860:Radiography, Abdominal