title: [Idiopathic retroperitoneal fibrosis diagnosed by CT-guided needle biopsy: a case report].
abstract: A 72-year-old man was admitted to another hospital because of general fatigue and dyspnea secondary to renal insufficiency. Abdominal computed tomography (CT) and magnetic resonance imaging showed left atrophic kidney, right hydronephrosis, and an intra-pelvic mass of soft-tissue density located anterior to the sacrum, involving the right ureter at the level between the 5th lumber vertebra and the sacrum. He was referred to our hospital after percutaneous nephrostomy was constructed into right kidney. CT-guided needle biopsy revealed the idiopathic retroperitoneal fibrosis, leading us to give him steroid therapy. Three weeks later, radiographic findings showed a remarkable reduction of the mass and the improvement of the right ureteral stricture.
authors.affiliation: Department of Urology, Hyogo College of Medicine.
authors.forename: Yozo
authors.initials: Y
authors.lastname: Mitsui
authors.forename: Jun
authors.initials: J
authors.lastname: Nagai
authors.forename: Yasuo
authors.initials: Y
authors.lastname: Ueda
authors.forename: Toru
authors.initials: T
authors.lastname: Suzuki
authors.forename: Mayumi
authors.initials: M
authors.lastname: Shincho
authors.forename: Yoshihide
authors.initials: Y
authors.lastname: Higuchi
authors.forename: Jun
authors.initials: J
authors.lastname: Qiu
authors.forename: Takuo
authors.initials: T
authors.lastname: Maruyama
authors.forename: Nobuyuki
authors.initials: N
authors.lastname: Kondoh
authors.forename: Michio
authors.initials: M
authors.lastname: Nojima
authors.forename: Shingo
authors.initials: S
authors.lastname: Yamamoto
authors.forename: Seiichi
authors.initials: S
authors.lastname: Hirota
authors.forename: Hiroki
authors.initials: H
authors.lastname: Shima
mesh_terms: D000368:Aged; D001707:Biopsy, Needle; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D009403:Nephrostomy, Percutaneous; D011239:Prednisolone / Q000008:administration & dosage; D051437:Renal Insufficiency / Q000150:complications / Q000601:surgery; D012185:Retroperitoneal Fibrosis / Q000150:complications / Q000175:diagnosis* / Q000188:drug therapy / Q000473:pathology*; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome
chemical_list: D011239:Prednisolone