Table 1.

WHO classification of testicular tumors.

Germ cell tumors	Sex cord-stromal tumors
Seminoma	Sertoli cell tumor
Seminoma with syncytiotrophoblastic cells	Leydig cell tumor
Spermatocytic seminoma	Granulosa cell tumor
Spermatocytic seminoma with sarcoma	Mixed types (e.g. Sertoli-Leydig cell tumor)
Non-seminomatous germ cell tumors	Unclassified
Embryonal carcinoma
Teratoma
a. Dermoid cyst
b. Monodermal teratoma
c. Teratoma with somatic type malignancy
Trophoblastic tumors (choriocarcinoma)
Yolk sac tumor (endodermal sinus tumor)
Mixed germ cell tumors