title: Retroconversion of malignant immature teratomas of the ovary after chemotherapy.
abstract: Two cases are reported in which a malignant, immature teratoma of the ovary retroconverted to a benign mature teratoma following chemotherapy. The literature is reviewed and possible explanations for this phenomenon are discussed.
mesh_terms: D000293:Adolescent; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use*; D005260:Female; D006801:Humans; D010051:Ovarian Neoplasms / Q000188:drug therapy* / Q000473:pathology; D013724:Teratoma / Q000188:drug therapy* / Q000473:pathology