Extragonadal germ cell tumors occur in all of the following except -
Extragonadal germ cell tumors occur at : -

Mediastinum → M.C. site.      
Retroperitoneum  → 2nd M.C. site.     
Sacrococcygeal region → Sacrococcygeal teratoma.
Pineal gland
Sacrococcygeal region
Mediastinum
Brain
Testis