这个词是什么意思？
A highly malignant, primitive form of carcinoma, probably of germinal cell or teratomatous derivation, usually arising in a gonad and rarely in other sites. It is rare in the female ovary, but in the male it accounts for 20% of all testicular tumors. (From Dorland, 27th ed & Holland et al., Cancer Medicine, 3d ed, p1595)
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D018236 · MeSH 2026。
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