Korean J Urol.  2008 Dec;49(12):1158-1160.

Xanthogranulomatous Pyelonephritis with Spontaneous Nephrocutaneous Fistula

• Jung TS
• Cho KH
• Yang WJ
• Song YS
• Park YH
• Park SM
• Kim DW

Abstract

Fistula formation between the upper urinary tract and cutaneous tissue is an uncommon complication in urogenital disease. Xanthogranulomatous pyelonephritis(XGP) is a severe, chronic infection of the renal parenchyma that is often associated with calculi and obstruction. We present a rare case of XGP with a nephrocutaneous fistula.

Keyword

Xanthogranulomatous pyelonephritis; Fistula

MeSH Terms

Calculi
Fistula
Pyelonephritis, Xanthogranulomatous
Urinary Tract

Figure

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  Fig. 1 There is a 4×4cm sized area of necrotic skin change with a fistula opening (arrow) in the right flank area.

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  Fig. 2 (A) The CT scan shows a fistula tract (arrow) from the lower pole of the right kidney to the right flank area. (B, C) A nephrocutaneous fistula arising from the lower pole of the right kidney (arrow head) and a retroperitoneal abscess (arrow) along the psoas muscle are observed.

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  Fig. 3 (A) The coronally sectioned kidney shows the fistula opening (arrow) in the lower pole and multiple dilated calyces containing yellowish pus. (B) The microscopic findings show lipid that contains foamy macrophages (arrow) (H&E, ×400).

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