恶性畸胎瘤是一种常见的恶性实体瘤，多见于小儿，目前多种疗法均难以彻底治愈肿瘤。
Teratocarcinoma is a common malignant solid tumor, which often occurs children. At present many treatments still cant get ideal effect.
本组中，起源于眼眶和肾脏的最多，且以视网膜母细胞瘤、肾母细胞瘤最多见，与上海、山东相比，肾母细胞瘤、肝癌及恶性畸胎瘤发病率较高，而脑瘤相对少见。
The most common origins are the orbit and the kidneys and the predominant tumors are retinoblastoma and nephroblastoma respectively. In contrast to those found in Shanghai and Shandong, the inciden…
未成熟畸胎瘤的恶性程度可逆转。
结论卵巢原发性恶性黑色素瘤来源于卵巢成熟的囊性畸胎瘤恶变，是一种罕见的卵巢肿瘤。
Conclusions Primary ovarian malignant melanoma arising from a mature cystic teratoma with malignant change, was a rare neoplasm.
恶性率较高，尤以颅内畸胎瘤恶性多见；
Generally, extragonadal teratomas have a high incidence of malignancy and most intracranial tumors are malignant.
骶尾部未成熟性畸胎瘤，应与含有其它恶性成分的肿瘤相区别，因为它们的预后有很大不同。
Immature sacrococcygeal teratomas should be differentiated from the tumors containing other malignant elements because of their vastly different prognoses.
结果：卵巢良、恶性肿瘤的CT诊断准确性均为89%，其中畸胎瘤达93%，卵巢区炎性包块的准确性为73%。
Results: CT diagnostic accuracy of malignancy was 89%, while the accuracy of teratoma was 93%, inflammatory masses was 73%.
成熟型畸胎瘤18例，未成熟型畸胎瘤6例，恶性小圆细胞性肿瘤1例。
Of the 25 patients there were 18 mature teratomas, 6 immature teratomas, and 1 malignant small round cell tumor.
成熟型畸胎瘤18例，未成熟型畸胎瘤6例，恶性小圆细胞性肿瘤1例。
Of the 25 patients there were 18 mature teratomas, 6 immature teratomas, and 1 malignant small round cell tumor.
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