1. germinomas: malignant tumors of primitive germ cells that occur in the gonads (called testicular seminomas in males, dysgerminomas in females) or in the CNS. Survival with these is much better than with nongerminomatous tumors

2. non-germinomatous germ cell tumors (NGGCT) include:

a) embryonal carcinoma

b) choriocarcinoma.

c) endodermal sinus tumor (EST) AKA yolk sac carcinoma: usually malignant

d) teratoma

● mature

● immature