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Case Reports in Urology
Volume 2015 (2015), Article ID 506078, 5 pages
http://dx.doi.org/10.1155/2015/506078
Case Report

Xanthogranulomatous Pyelonephritis of a Lower Pole Moiety in a Duplicated Collecting System Kidney

1General Surgery Residency Program, Maimonides Medical Center, 4802 10th Avenue, Brooklyn, NY 11219, USA
2Urology Residency Program, Maimonides Medical Center, 4802 10th Avenue, Brooklyn, NY 11219, USA
3Urology Department, Maimonides Medical Center, 4802 10th Avenue, Brooklyn, NY 11219, USA

Received 20 July 2015; Accepted 1 September 2015

Academic Editor: Michele Gallucci

Copyright © 2015 Jean Paul Wuilleumier 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.

Abstract

Xanthogranulomatous pyelonephritis (XGP) is a destructive inflammatory process which is frequently caused by recurrent urinary tract infections or chronic obstruction by kidney stones. We present a 56-year-old female with an extensive retroperitoneal urinoma and xanthogranulomatous pyelonephritis of the lower pole moiety in a kidney with a duplicated collecting system due to obstructive nephrolithiasis. After drainage of the urinoma, the patient underwent a definitive lower pole heminephrectomy with preservation of the functional upper pole. We review important clinical features of xanthogranulomatous pyelonephritis and considerations for surgery on a duplicated kidney.