Glioblastoma is a type of primary brain tumor. Primary brain tumors are
those that arise from the brain itself rather than traveling or metastasizing
from another location in the body. Approximately 17,000 new cases of primary
brain tumors are treated each year in the United States. Glioblastomas
are fast growing astrocytomas that contain areas of dead (necrotic) tumor
cells. Glioblastomas are aggressive tumors that require specialized care,
radiation and chemotherapy.