Ultrasound of a Patient With Gonadal Dysgenesis and Mixed Malignant Germ Cell Tumor

Both ovarian malignancy and gonadal dysgenesis in the adolescent period are rare. Ovarian tumors represent approximately 1% of childhood malignancies. Gonadal dysgenesis is also unusual and results when the germ cells are lacking and the ovary is replaced by a fibrous streak. An 18-year-old with primary amenorrhea,acute pelvic pain,and a 16-cm pelvic mass was found to have both a malignant mixed germ cell tumor and a contralateral streak ovary.