结论卵巢内胚窦瘤的发生率在中国各类型卵巢恶性生殖细胞瘤中位居首位。
Conclusions the endodermal sinus tumor of the ovary stands first in the incidence of malignant germ cell tumors of the ovary in China.
方法：对26例收治的原发性纵隔恶性生殖细胞瘤的临床资料进行回顾性分析。
Methods: the clinical data of 26 patients with primary malignant germ cell tumors of the mediastinum were retrospectively analyzed.
可以导致出血性脑转移瘤的常见恶性肿瘤有黑色素瘤、肾细胞癌、绒毛膜癌、甲状腺癌、肺癌、乳腺癌、以及生殖细胞癌。
The most likely malignancies to produce hemorrhagic metastases are melanoma, renal cell carcinoma, choriocarcinoma, thyroid, lung, breast, and germ cell tumors.
目的：儿童恶性生殖细胞肿瘤的发病率是百万分之二到三，卵黄囊瘤是其中最常见的儿童恶性生殖细胞肿瘤，约占62.7%。
Objective: malignant germ cell tumors occur in childhood at a rate of 2 to 3 cases per million children, and Yolk sac tumor accounts for the most (62.7%) of malignant germ cell tumors.
目的：儿童恶性生殖细胞肿瘤的发病率是百万分之二到三，卵黄囊瘤是其中最常见的儿童恶性生殖细胞肿瘤，约占62.7%。
Objective: malignant germ cell tumors occur in childhood at a rate of 2 to 3 cases per million children, and Yolk sac tumor accounts for the most (62.7%) of malignant germ cell tumors.
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