When we talk about the brain cancer survival rate, we talk about those patients that are still alive after being diagnosed of brain cancer five years before. It doesn't matter whether they have gained other complications, are fully healed or not healed at all because what is taken into consideration is the fact that they are still alive. There are several factors which affects the prognosis of a patient and one is the size of the abnormal cell growth or tumor. Another is where the tumor is located, if it is within the brain expect that the patient who has this has a lower prognosis. Also, stage 1 and 2 brain cancer patients have more chance of getting cured than those patients with stage 3 and 4. The 5 year brain cancer survival rate is based on a large population of brain cancer patients and should not be used to give a prognosis to a single patient.