“…The kidney is one of the least common sites for teratoma and other germ cell tumors, and renal teratomas are extremely rare. To date, 36 cases (13 males, 23 females) of renal teratoma have been reported worldwide,1–5 with ages ranging from 3 days to 72 years and tumor size from 2 to 30 cm. In addition, eight patients have been reported to present complications with some congenital anomalies, such as duplex kidney, horseshoe kidney, double ureter, and renal dysplasia 6.…”