title: Xanthogranulomatous Pyelonephritis of a Lower Pole Moiety in a Duplicated Collecting System Kidney.
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.
authors.affiliation: General Surgery Residency Program, Maimonides Medical Center, 4802 10th Avenue, Brooklyn, NY 11219, USA.
authors.forename: Jean Paul
authors.initials: JP
authors.lastname: Wuilleumier
authors.affiliation: Urology Residency Program, Maimonides Medical Center, 4802 10th Avenue, Brooklyn, NY 11219, USA.
authors.forename: Ariel
authors.initials: A
authors.lastname: Schulman
authors.affiliation: Urology Department, Maimonides Medical Center, 4802 10th Avenue, Brooklyn, NY 11219, USA.
authors.forename: Antonio
authors.initials: A
authors.lastname: Montgomery
authors.affiliation: Urology Department, Maimonides Medical Center, 4802 10th Avenue, Brooklyn, NY 11219, USA.
authors.forename: Ervin
authors.initials: E
authors.lastname: Teper