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.

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近年来的研究发现，肾发育过程中的胚基残留，分化障碍可能是肾母细胞瘤发病的原因之一。

For these years, residua of metanephric blastema and delay of differentiation in the development of kidney have been considered the cause of nephroblastoma.

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目的建立成釉细胞瘤的鸡胚绒毛尿囊膜侵袭模型。

Objective To establish an ameloblastoma invasive model on the chick embryo chorioallantoic membrane (CAM).

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