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Case Reports in Medicine
Volume 2017 (2017), Article ID 2392670, 3 pages
Case Report

Xanthogranulomatous Pyelonephritis with Incomplete Double Ureter

1Departments of Urology and Renal Transplantation, Yokohama City University Medical Center, Yokohama, Japan
2Division of Diagnostic Pathology, Yokohama City University Medical Center, Yokohama, Japan

Correspondence should be addressed to Takashi Kawahara; pj.oc.oohay@1002kt_ihsakat

Received 16 May 2017; Revised 16 August 2017; Accepted 20 August 2017; Published 18 September 2017

Academic Editor: Dante Amato

Copyright © 2017 Yutaro Hayashi et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Introduction. Xanthogranulomatous pyelonephritis (XGP) is a type of chronic renal inflammation that usually occurs in immunocompromised middle-aged women with chronic urinary tract infection or ureteral obstruction induced by the formation of ureteral stones. XGP with an incomplete double ureter is extremely rare. Case Presentation. A 76-year-old woman was referred to our department to undergo further examination for a left renal tumor that was detected by ultrasonography. Dynamic contrast computed tomography (CT) revealed an enhanced tumor in the upper renal parenchyma. Laparoscopic radical nephrectomy was performed based on a preoperative diagnosis of renal cell carcinoma. Histological sections showed the aggregation of foam cells; thus, XGP was diagnosed. Conclusion. We herein report a rare case of XGP in the upper pole of the kidney, which might have been associated with an incomplete double ureter.