Sex Cord Stromal Tumors are rare ovarian tumors, including Steroid Cell tumors, NOS, almost all benign, associated with hirsutism and virilization, with elevated serum testosterone levels, commonly unilateral and with small diameter compared to others. A 43-year-old woman was referred to our center with secondary amenorrhea, hirsutism, balding and clitoromegaly, high serum level of testosterone and free testosterone. Ultrasound examination showed a unilateral small solid rounded hypoechoic lesion, with regular margins, moderately to richly vascularized at power Doppler examination (CS 3/4). A laparoscopic right salpingo-oophorectomy was performed. Final pathology diagnosed a steroid cell tumor, NOS.