title: Atypical retroperitoneal fibrosis: MRI findings.
abstract: A case of retroperitoneal fibrosis with an unusual perirenal involvement diagnosed at MR imaging is reported. Other conditions, such as metastatic disease or lymphoma, may be considered especially when the initial presentation is not typical. Imaging modalities in this condition are discussed.
authors.affiliation: Department of Radiology, Hospital Clinic, C/Villarroel 170, E-08036 Barcelona, Spain.
authors.forename: J R
authors.initials: JR
authors.lastname: Ayuso
authors.forename: A
authors.initials: A
authors.lastname: Garcia-Criado
authors.forename: T M
authors.initials: TM
authors.lastname: Caralt
authors.forename: C
authors.initials: C
authors.lastname: Ayuso
authors.forename: A
authors.initials: A
authors.lastname: Torras
authors.forename: T
authors.initials: T
authors.lastname: Ribalta
mesh_terms: D003937:Diagnosis, Differential; D006801:Humans; D007668:Kidney / Q000473:pathology; D007674:Kidney Diseases / Q000175:diagnosis; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D012185:Retroperitoneal Fibrosis / Q000175:diagnosis*