MONDO_0006290 (malignant germ cell tumor) is a gonadal or extragonadal malignant neoplasm that arises from germ cells. Representative examples include embryonal carcinoma, yolk sac tumor, and seminoma. Also known as: cancer of germ cell, germ cell cancer, germ cell tumor, malignant, malignant germ cell neoplasm, malignant neoplasm of germ cell, malignant neoplasm of the germ cell, malignant tumor of germ cell, malignant tumor of the germ cell.