Rapidly Growing High-Grade Immature Ovarian Teratoma in A School-Age Child: Case Report of Successful Management of A Giant Prepubertal Mass.

Ovarian teratoma is the most common germ cell neoplasm. It usually occurs in the first two decades of life. Theimmature teratoma comprises less than 1% of ovarian cancers and less than 1% of ovarian teratomas. Thoughimmature ovarian teratoma can be aggressive, a high index of suspicion, early detection, and timely interventionwith complete tumor excision are helpful to an eventual good outcome. Given the rarity, atypical age atpresentation, and the grade of our case, it's being reported with a literature review.