. "a tumor composed of immature undifferentiated cells"@en-us . . . . "embryonal carcinosarcoma"@en-us . "113429027"@en-us . . "blastoma"@en-us . . . "0"^^ . "14236595-n"^^ . . . . . "blastocytoma"@en-us . "a tumor composed of immature undifferentiated cells"@en-us . "114236595"^^ . "0"^^ . . "blastoma"^^ . .