Ovarian Sertoli-Leydig cell tumor in a 9-month-old infant with special histologic pattern.

A 9-month-old infant with left ovarian Sertoli Leydig cell tumors (SLCTs) was reported and the special histological pattern was that the main components of the tumor were leydig cells. She was the youngest reported case of the tumor. The patient had increased serum estradiol and A-Fetoprofein (AFP) and a left oophorectomy was performed. After surgery, the patient has not received any treatment. So far, the patient has been well and survived without recurrence for 40 months.