What are germ cell tumors?

Rare (95% of testicular tumors but 1% of cancer in men), much rare in women, young pt, detected by serum markers, curable even metastatic, reproduce during embryogenesis observed. Classifications include (seminoma, embryonal carcinoma, teratoma, yolk sac tumors, choriocarcinoma, complex germ cell tumors). Testicular tumors (50% seminoma and 50% non seminoma, peak of seminoma in age 30, curable by surgery and radio, nonseminoma age 20, we see elevation of serum markers (aFP yolk tumors, bHCG choriocarcinoma) curable by chemotherapy) Ovarian tumors (exceptionally malignant, dermoid cyst and complex teratoma frequent in ovary) Extragonadic germ cell tumors (all germ cell tumors seen)