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Brain Tumors

There are two main types of tumors:

  • Noncancerous (benign) — Slow growing tumors that do not spread to other parts of the body.
  • Cancerous (malignant) — Faster growing tumors that are more difficult to treat, and usually destroy the surrounding brain tissue.

Cancerous brain tumors can be further classified as:

  • Primary tumors originate in the brain and rarely spread throughout the body. They are named from the cells in which they originated, such as astrocytomas, oligodendrogliomas, and ependymomas.
  • Secondary brain tumors (or brain metastases) originate from cancer cells in another part of the body and spread to the brain.