Types of brain cancer
Primary brain tumors are tumors that form from cells within the brain. The tumors are categorized by the type of cell in which it first develops.
There are over 120 different types of brain tumors (National Brain Tumor Society). The most common primary brain tumors are called gliomas, which originate in the glial (supportive) tissue. About one third of all primary brain tumors and other nervous system tumors form from glial cells.
Other neurological cancers
Aside from tumors in the brain, cancer can begin in, or spread to, other areas of the central nervous system, such as the spinal cord or column, or the peripheral nerves. Cancer that develops in the spinal cord or its surrounding structures is called spinal cancer. Most tumors of the spine are metastatic tumors, which have spread to the spine from another location in the body.