title: Right perirenal air: emphysematous pyelonephritis or duodenal perforation?
authors.affiliation: Department of Medical Imaging, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan.
authors.forename: K-L
authors.initials: KL
authors.lastname: Liu
authors.forename: W-J
authors.initials: WJ
authors.lastname: Lee
authors.forename: K-H
authors.initials: KH
authors.lastname: Huang
authors.forename: S-J
authors.initials: SJ
authors.lastname: Chen
mesh_terms: D000368:Aged; D000388:Air; D002760:Cholangiopancreatography, Endoscopic Retrograde / Q000009:adverse effects; D003937:Diagnosis, Differential; D004386:Duodenum / Q000000981:diagnostic imaging; D004646:Emphysema / Q000000981:diagnostic imaging* / Q000209:etiology; D005260:Female; D006801:Humans; D007416:Intestinal Perforation / Q000150:complications / Q000000981:diagnostic imaging* / Q000209:etiology; D008875:Middle Aged; D011704:Pyelonephritis / Q000150:complications / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography