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Xanthogranulomatous pyelonephritis with a renocolic fistula caused by a parapelvic cyst
Yoh Matsuoka1, Gaku Arai, Hisashi Ishimaru
1Department of Urology, Tokyo Metropolitan Tama Geriatric Hospital, Tokyo, Japan. yoh-m.uro@tmd.ac.jp
Abstract:
Fistula formation between the upper urinary tract and bowel is an uncommon complication in urogenital diseases. We present a rare case of focal xanthogranulomatous pyelonephritis with a renocolic fistula. This is the first case where a parapelvic cyst obstructs the caliceal outflow and leads to the formation of a renocolic fistula in renal inflammatory disease. It is difficult to make a preoperative diagnosis of focal xanthogranulomatous pyelonephritis with widespread involvement that is caused by non-calculous urinary tract obstruction.
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