Glioma
This group comprises anaplastic astrocytomas and glioblastoma multiforme. Whereas the median overall survival of anaplastic (WHO grade III) gliomas is approximately 3 years, glioblastoma multiforme has a poor median overall survival of c. 15 months.
Giant-cell glioblastoma
The giant-cell glioblastoma is a rare neoplasia: its incidence is less than 1% of all brain tumors. It represents up to 5% of glioblastomas.