production of the beta-subunit of human chorionic gonadotropin ( beta-hcg ) by human germ cell tumors was studied in surgical specimens , cultured cells and xenografted tumors . beta-hcg was identified most frequently in the syncytiotrophoblastic and intermediate trophoblastic components of choriocarcinoma , and it was also detected in syncytiotrophoblastic giant cells , occasionally in association with embryonal carcinoma , and less frequently with yolk sac tumor , seminoma and dysgerminoma .
C0205851
germ cell tumors
C0027651
tumors