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skos:definition |
MSH: 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),NCI: A mass of rapidly growing cells that begins in embryonic (fetal) tissue. Embryonal tumors may be benign or malignant, and include neuroblastomas and Wilms tumors.,NCI: A non-seminomatous malignant germ cell neoplasm of the testis or ovary.,NCI: A non-seminomatous malignant germ cell tumor characterized by the presence of large germ cells with abundant cytoplasm resembling epithelial cells, geographic necrosis, high mitotic activity, and pseudoglandular and pseudopapillary structures formation. It can arise from the testis, ovary, and extragonadal sites (central nervous system and mediastinum).
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