title: Coexistence of renal replacement lipomatosis with xanthogranulomatous pyelonephritis.
abstract: We report on a case of coexistence of replacement lipomatosis with xanthogranulomatous pyelonephritis (XGP) in the same kidney associated with staghorn calculi. A 63-year-old man was admitted to hospital complaining of a right abdominal mass. Computed tomography (CT) showed renal parenchymal atrophy with extremely increased perirenal fat. Right nephrectomy was performed. Postoperative diagnosis was renal replacement lipomatosis with XGP. Renal replacement lipomatosis and XGP have several similarities in terms of clinical background and CT findings. Sometimes it is difficult to differentiate them from malignant diseases. It is extremely rare that both conditions coexist in the same kidney. To our knowledge, only one such case has been reported.
authors.affiliation: Department of Urology, Takeuchi Hospital and Mie University School of Medicine, Tsu-city, Mie, Japan. ysakata@aichi-cc.jp
authors.forename: Yuko
authors.initials: Y
authors.lastname: Sakata
authors.forename: Nobutaka
authors.initials: N
authors.lastname: Kinoshita
authors.forename: Hiromi
authors.initials: H
authors.lastname: Kato
authors.forename: Yasushi
authors.initials: Y
authors.lastname: Yamada
authors.forename: Yoshiki
authors.initials: Y
authors.lastname: Sugimura
mesh_terms: D006801:Humans; D007674:Kidney Diseases / Q000150:complications / Q000175:diagnosis; D008068:Lipomatosis / Q000150:complications* / Q000175:diagnosis; D008297:Male; D008875:Middle Aged; D011705:Pyelonephritis, Xanthogranulomatous / Q000150:complications* / Q000175:diagnosis