title: Free retroperitoneal gas--a radiological sign of penetrating abdominal injury.
authors.forename: A K
authors.initials: AK
authors.lastname: Banerjee
mesh_terms: D000007:Abdominal Injuries / Q000000981:diagnostic imaging*; D000293:Adolescent; D000388:Air; D006801:Humans; D008297:Male; D011859:Radiography; D012187:Retroperitoneal Space / Q000000981:diagnostic imaging*