Primary Brain Tumors.. The most common brain tumors are gliomas, which begin in the glial (supportive) tissue. There are several types of gliomas, including the following: Astrocytomas arise from small, star-shaped cells called astrocytes. They may grow anywhere in the brain or spinal cord.
Although many growths in the brain are popularly called brain tumors, not all brain tumors are cancerous. A tumor is simply a mass of cells. A benign tumor is .
People with a brain tumor may experience the following symptoms or signs.. Motor seizures, also called convulsions, are sudden involuntary movements of a