Table 2.
Clinical features of 48 cases of primary extragonadal malignant germ cell tumors
| CNS | mediastinum | retroperitoneum | |
|---|---|---|---|
| sex | |||
| male | 18 | 16 | 3 |
| female | 9 | 0 | 2 |
| M/F | 2:1 | All M | 1.5:1 |
| Age | |||
| <10 | 2 | 0 | 3 |
| 10~20 | 20 | 4 | 0 |
| 21~30 | 4 | 6 | 1 |
| >30 | 1 | 6 | 1 |
| size (diate cm) | 0.5~5.5 | 6~21 | 7~16 |
| Histological type | |||
| S/G | 22 | 7 | 2 |
| IT/MT | 1 | 3 | 2 |
| YST | 0 | 3 | 1 |
| EC | 1 | 0 | 0 |
| CC | 1 | 0 | 0 |
| MGCTs | 2 | 3 | 0 |
G: germinoma; IT: immature teratoma; MT: malignant teratoma; YST: yolk sac tumor; EC: embryonal carcinoma; CC: choriocarcinoma; MGCTs: mixed germ cell tumors; M/F: male/female.