While most types of primary brain cancer may spread within the brain, it is rare for a primary brain tumor to spread outside the brain. (mdanderson.org)
The study bases its findings on interviews conducted between 1994 and 1998 with 469 men and women diagnosed with primary brain cancer and 422 people without the disease. (scientificamerican.com)
Glioblastoma multiforme (GBM) is considered the most malignant of primary brain cancers with only about 12 % of patients living beyond 36 months (long - term survivors). (healthimpactnews.com)