obsolete germ cell and embryonal cancer https://github.com/monarch-initiative/mondo/issues/376 https://www.malacards.org/card/germ_cell_and_embryonal_cancer true MONDO:0002510 MESH:D009373 OBSOLETE. Neoplasms composed of primordial germ cells of embryonic gonads or of elements of the germ layers of the embryo, mammalian. The concept does not refer to neoplasms located in the gonads or present in an embryo or fetus. DOID:3095 Embryonal malignancies are composed of primitive (immature) tissues and do not originate from the germinal layer. Germ cell malignancies originate from the germinal layer. This is a poor term, should be removed. germ cell tumor