Table 1.

Tumor characteristics and diagnosis ages of pediatric GCT cases (n=278).

	Males n (%)	Females n (%)
Anatomic Location
Testis/Ovary	47 (58)	97 (51)
Extragonadal	31 (38)	89 (47)
Metastatic	3 (3.7)	4 (2.1)
Histology
Yolk sac tumor  (Endodermal sinus tumor)	46 (55.4)	79 (40.5)
Teratoma	14 (16.9)	57 (29.2)
Seminoma	2 (2.4)	43 (22.1)
Other nonseminomas*  (Embryonal carcinoma, Choriocarcinoma, Polyembryoma)	17 (20.5)	8 (4.1)
Other†  (mixed germ cell tumor components and malignant tumor cells)	3 (3.6)	7 (3.6)
Not specified	1 (1.2)	1 (0.51)
Age at diagnosis (years)
<1	22 (26.5)	35 (18.0)
1-4	42 (50.6)	49 (25.1)
5-9	4 (4.8)	37 (19.0)
10-14	15 (18.1)	74 (38.0)
Total	83 (100)	195 (100)

^*Embryonal carcinoma, Choriocarcinoma, Polyembryoma

^†Mixed germ cell tumor components and malignant tumor cells