CNN's Chief Medical Correspondent Dr. Sanjay Gupta spoke to doctors involved in McCain's care with permission from his family. Gupta added because of the nature of the tumor, McCain will likely need more procedures in the coming weeks. There is no specific treatment used for glioblastoma, instead there are a few different approaches doctors can take Gupta said on Wednesday. "This is a malignant cancer, what that means in this case is that you operate on this," he said. "It needs to be treated as well with chemotherapy and radiation." When a cancer is malignant, this means cells are dividing uncontrollably and can invade nearby tissues and may also spread to other parts of the body through the blood stream or lymph system in the body.
The ABTA labels the prognosis for glioblastoma survival in terms of median survival -- the length of time at which an equal number of patients do better and an equal number of patients do worse. Depending on the type of glioblastoma and treatment used, this can range from 14 months to three years. The association also cites a 2009 study that found 10% of patients with glioblastoma may live five years or longer. The average survival time for malignant glioblastoma is around 14 months with treatment, Gupta said.
http://edition.cnn.com/2017/07/20/health/what-is-glioblastoma-john-mccain-brain-tumor/index.html
