What are some types of brain tumors?
A primary brain tumor originates inside the brain rather than traveling to the brain from another part of the body, notes the Department of Neurological Surgery at the University of Pittsburgh. Within the category of primary brain tumors, gliomas, which are tumors that first begin developing in the supportive tissue called the glial tissue, are the most common. Astrocytomas, oligodendrogliomas and ependymomas are examples of gliomas. An astrocytoma stems from a type of cell called an astrocyte, while oligodendrogliomas come from the cells responsible for making the fatty myelin that protects nerves. Ependymomas usually affect children and teenagers, and they may grow inside the ventricles or in the spinal cord.