NCIt related terms : Embryonal teratoma; Immature teratoma, NOS;
NCIt definition : A teratoma characterized by the presence of an extensive component of immature, fetal-type
tissues.;
Alternative definition : NCI-GLOSS: A rare type of malignant (cancer) germ cell tumor (type of tumor that begins
in the cells that give rise to sperm or eggs) that often contains several different
types of tissue such as hair, muscle, and bone.;