Spontaneous Nephrocutaneous Fistula: Rare Complication of Xanthogranulomatous Pyelonephritis.

Renocutaneous fistulae may occur as a result of chronic infection, especially in the setting of calculous disease. Spontaneous renocutaneous is rare. Usually nephrocutanous fistula developed in patient with previous renal surgery, trauma, tumors, and chronic urinary tract infection with abscess formation. We report a case of spontaneous nephrocutaneous fistula. A 37-year-old women previously well presented to ER department with purulent discharge and a palpable mass on the left lumbar area. CT scan with IV contrast fistulous tract seen within the subcutaneous plane in Left lumbar region tracking towards retroperitoneal space, and in continuity with of left kidney. The patient underwent 'Left nephrectomy with excision of fistulous tract' after long course of antibiotics.