背部に腫瘤を形成した黄色肉芽腫性腎盂腎炎の1例

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51歳女.本症例は腎炎腎結石を伴った膿腎症型で病変が傍腎組織に及び,結果として,腰背部にまで膿瘍を形成した極めて稀な症例と考えられるA 51-year-old female exhibited fever, left flank pain and left flank mass in March, 1993. Drip infusion pyelography (DIP) revealed a non-functioning left kidney with shadows of calculi, and abdominal computerized tomography (CT) showed renal calculi and multilocular cystic lesions in the left kidney extending through the perinephric space into the mass on the left flank. Percutaneous nephrostomy and percutaneous drainage were performed, followed by left nephrectomy. Histopathological findings revealed xanthogranulomatous pyelonephritis. There have been a few case reports of xanthogranulomatous pyelonephritis forming nephrocutaneous fistula in the back.