Abstract: Pediatric ovarian malignant tumors are an uncommon type of childhood cancer and account for only 1% of all malignancies in children. The main histopathologic type is germ cell tumor, which is different from adult ovarian tumor deriving mainly from epithelial tissue, including teratoma, gonadoblastoma, endodermal sinus tumor (also known as yolk sac tumor), polyembryony cancer, and embryonal carcinoma, choriocarcinoma. Non germ cell tumors include sex cord stromal tumor and epithelial tumors, sex cord stromal tumor including theca fibrous tumor, Sertoli-Leydig cell tumor and juvenile granulosa cell tumor. Most of adolescent patients are in early clinical stage at their first medical treatment and conservative operation is feasible. Effective treatment of tumors with fertility sparing are the aims of treatment for adolescent ovary tumors.

Key words: 【Keywords】 procedures, Antineoplastic combined chemotherapy protocols