There is no single characteristic clinical or radiological feature to diagnose xanthogranulomatous pyelonephritis, so it makes accurate preoperative diagnosis difficult. In our case, the renal parenchyme of affected kidney was well preserved on excretory urogram. The abnormal finding was only a filling defect within the right upper pelvocalyceal system. Herein we report a case of xanthogranulomatous pyelonephritis in a 18 years old girl which was confused with renal pelvic tumor.
Adolescent ; Diagnosis ; Female ; Humans ; Kidney ; Pyelonephritis, Xanthogranulomatous*