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Case Reports
. 2017:2017:2392670.
doi: 10.1155/2017/2392670. Epub 2017 Sep 18.

Xanthogranulomatous Pyelonephritis with Incomplete Double Ureter

Yutaro Hayashi  1 , Takashi Kawahara  1 , Yusuke Hattori  1 , Kota Shimokihara  1 , Sohgo Tsutsumi  1 , Daiji Takamoto  1 , Taku Mochizuki  1 , Jun-Ichi Teranishi  1 , Yasushi Yumura  1 , Yasuhide Miyoshi  1 , Masako Otani  2 , Hiroji Uemura  1
Affiliations
Case Reports

Xanthogranulomatous Pyelonephritis with Incomplete Double Ureter

Yutaro Hayashi et al. Case Rep Med. 2017.

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.

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Figures

Figure 1
Figure 1
CT image: left renal mass with contrasted surface (arrow).
Figure 2
Figure 2
MRI: the tumor contained small cysts (arrow).
Figure 3
Figure 3
The resected specimens: a yellowish-white tumor in the upper renal parenchyma and incomplete double ureters.
Figure 4
Figure 4
Infiltration of inflammatory cells including foam cells, plasma cells, and lymphocytes ((a) ×40). There is aggregation of foam cells (arrow) ((b) ×400) in hematoxylin and eosin stain.
See this image and copyright information in PMC

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