Glioma is a broad category of brain and spinal cord tumors that come from glial cells, brain cells that can develop into tumors.
The symptoms, prognosis, and treatment of a malignant glioma depend on the person’s age, the exact type of tumor, and the location of the tumor within the brain. These tumors tend to grow and infiltrate into the normal brain tissue, which makes surgical removal very difficult -- or sometimes impossible -- and complicates treatment.
These brain tumors are often diagnosed...
Previous injury may also be a risk factor, but a recent study failed to confirm this. Meningiomas have been found in places where skull fractures have occurred. They've also been found in places where the surrounding membrane has been scarred.
Some research suggests a link between meningiomas and the hormone progesterone.
Middle-aged women are more than twice as likely as men to develop a meningioma. Most meningiomas occur between the ages of 30 and 70. They are very rare in children.
Because most meningiomas grow very slowly, symptoms often develop gradually, if they develop at all. The most common symptoms include: