title: Malignant fibrous histiocytoma arising in a benign cystic teratoma of the ovary.
mesh_terms: D000328:Adult; D003884:Dermoid Cyst / Q000473:pathology*; D005260:Female; D018219:Histiocytoma, Benign Fibrous / Q000209:etiology / Q000473:pathology*; D006801:Humans; D009362:Neoplasm Metastasis; D009378:Neoplasms, Multiple Primary / Q000473:pathology*; D010051:Ovarian Neoplasms / Q000209:etiology / Q000473:pathology*