|
|
Spinal-cord astrocytomas are rare, comprising only 1% of all primary central nervous system tumors. Malignant astrocytomas grade III and IV account for only 7.5% of intramedullary spinal gliomas occurring in all age groups and for as few as 1.2% of primary intramedullary tumors in children. The frequency of primary intramedullary with intracranial metastasis is relatively rare in childhood and such... |
