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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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