Xanthogranulomatous Pyelonephritis with Incomplete Double Ureter

Author:

Hayashi Yutaro1,Kawahara Takashi1ORCID,Hattori Yusuke1,Shimokihara Kota1,Tsutsumi Sohgo1,Takamoto Daiji1,Mochizuki Taku1,Teranishi Jun-ichi1,Yumura Yasushi1,Miyoshi Yasuhide1,Otani Masako2,Uemura Hiroji1ORCID

Affiliation:

1. Departments of Urology and Renal Transplantation, Yokohama City University Medical Center, Yokohama, Japan

2. Division of Diagnostic Pathology, Yokohama City University Medical Center, Yokohama, Japan

Abstract

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.

Funder

Ministry of Education, Culture, Sports, Science and Technology

Publisher

Hindawi Limited

Subject

General Medicine

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