A.精原細胞瘤 B.睪丸胚胎癌 C.睪丸間質(zhì)細胞瘤 D.睪丸惡性淋巴瘤 E.睪丸轉(zhuǎn)移癌
A.2歲以前 B.3~6歲 C.7~9歲 D.10~13歲 E.14歲以后
A.50% B.33% C.10% D.3% E.不到1%