Gamma Knife® Surgery Treatment of Meningioma

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Free Gamma Knife® Patient Guide

Meningioma are often benign tumors arising from the coverings of the brain and spinal cord. They represent about one-third of all primary brain tumors and occur most frequently in middle-aged women. Although meningiomas are referred to as brain tumors, they do not grow from brain tissue. They arise from the meninges, which are three thin layers of tissue covering the brain and spinal cord. These tumors are most often found near the top and the outer curve of the brain. Tumors may also form at the base of the skull.

Meningioma usually grow inward, causing pressure on the brain or spinal cord. They also can grow outward toward the skull, causing it to thicken. Most meningioma are noncancerous, slow-growing tumors. Some contain sacs of fluid (cysts), mineral deposits (calcifications), or tightly packed bunches of blood vessels.

The Gamma Knife® can be used to treat meningioma in the brain. Its highly focused beams of radiation are targeted on the tumor itself, reducing the dose to the surrounding healthy tissue.

With Gamma Knife® surgery, a patient can often:

  • Be treated in one session
  • Experience less damage to healthy cells and tissue
  • Enjoy faster recovery times
  • Gain better quality of life