https://blogs.mercola.com:443/sites/vitalvotes/archive/2017/07/21/surviving-glioblastoma-mccains-brain-tumor-is-an-aggressive-type-of-cancer.aspxSen. John McCain, the 2008 Republican presidential candidate, was diagnosed with glioblastoma multiforme. This is a famously aggressive form of brain cancer and generally returns quickly after the completion of chemotherapy and radiation treatments. DespiteenCommunityServer 2008.5 SP1 (Debug Build: 31106.3070)