An embryonal carcinoma that arises from the ovary and occurs in children. The disease is MONDO_0004441 (childhood ovarian embryonal carcinoma). Also known as: childhood embryonal carcinoma of ovary, ovarian embryonal carcinoma of childhood, paediatric embryonal carcinoma of ovary, paediatric embryonal carcinoma of the ovary, paediatric ovarian embryonal carcinoma, pediatric embryonal carcinoma of ovary, pediatric embryonal carcinoma of the ovary, pediatric ovarian embryonal carcinoma.