the results of the present study give further support to the view that yolk sac tumor ( endodermal sinus tumor ) is not adistinctive neoplasm of the infant 's testis , but a germ cell neoplasm differentiating in the direction of yolk sac or vitelline structures , and occurring in the testis , ovary and extragonadal sites in common with other germ cell neoplasms .
C0205851
germ cell neoplasm
C0262963
extragonadal