定义凡由一种、二种或三种胚叶组织和器官组成的肿瘤,Ewing氏命名为畸胎瘤。卵巢畸胎瘤分为良性(或囊性)与恶性(或实体性)二种。囊性的,统称囊性畸胎瘤;其中有恶性变的,称为囊性畸胎瘤癌变或肉瘤样变。实体性的,细胞分化不好,称实体性或恶性畸胎留。但卵巢畸胎瘤有时虽为突体性,并非恶性,故近来Green氏主张将卵巢畸胎瘤分为四型:(1)良性囊性畸胎瘤或皮样囊肿;(2)良性囊性畸胎瘤恶性变(兰层胚叶中之一层,最常见是外胚叶恶性变);(3)良性实体性畸胎瘤;(4)恶性实体性畸胎 Definitions Any tumor consisting of one, two or three germline tissues and organs, Ewing’s designation teratoma. Ovarian teratoma is divided into benign (or cystic) and malignant (or physical) two. Cystic, collectively referred to cystic teratoma; which malignant change, known as cystic teratocarcinoma or sarcomatoid change. Substantial, poor cell differentiation, said physical or malignant teratogenic stay. However, although sometimes ovarian teratoma is sudden, not malignant, so Green recently advocated the ovarian teratoma is divided into four types: (1) benign cystic teratoma or dermoid cysts; (2) benign cystic Teratoma malignant transformation (a layer of blue lamina propria, the most common is the ectodermal malignancy); (3) benign solid teratoma; (4) malignant solid teratogenic