Nephrocutaneous Fistula: An Unusual Presentation of Xanthogranulomatous Pyelonephritis

Spontaneous nephrocutaneous fistula is a rare manifestation of renal diseases. the majority of such fistulas are associated with xanthogranulomatous pyelonephritis, chronic renal tuberculosis, complicated renal stones, and post-traumatic or surgical injuries. we report the case of a 58-year-old male who presented with a history of massive lumbar cutaneous purulent discharge for 3 years. more investigations with ultrasonographic study and magnetic resonance imaging demonstrated the presence of a fistula between the kidney and skin. detailed laboratory workup was negative for the diagnosis of renal tuberculosis. this patient was considered as a rare variant of xanthogranulomatous pyelonephritis and was managed effectively with a simple nephrectomy.