MONDO_0003759 (childhood ovarian yolk sac tumor) is a yolk sac tumor that arises from the ovary and occurs in children. Also known as: childhood ovarian endodermal sinus neoplasm, ovary childhood endodermal sinus tumor, ovary childhood endodermal sinus tumour, paediatric ovarian yolk Sac tumour, pediatric ovarian yolk Sac tumor.