Glioblastoma
The most common length of survival following diagnosis is 12 to 15 months, with fewer than 3% to 5% of people surviving longer than five years. Without treatment survival is typically 3 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.