When the cells of a glioblastoma are examined under a microscope, their appearance suggests how malignant, or cancerous, the tumor is. The prognosis is worse for tumors which are graded as being more malignant. Tumors in which new cells are produced more rapidly also have a poorer outlook.
Patients who are able to undergo aggressive treatment regimes, combining surgery with chemotherapy and radiation therapy, have a better life expectancy.
It is difficult to predict the outlook for a specific individual. Generally, it is suggested by research findings that the prognosis of glioblastoma is more positive for those who are less than 40 years old.
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