A benign tumor of the eighth cranial nerve; more accurately referred to as a schwannoma, because it is composed of Schwann cells, which produce myelin.
Dialtion or ballooning of an artery wall as a result of injury, disease, or congential condition.
Arteriovenous malformation (AVM):
A collection of blood vessels with abnormal communication between the arteries and veins. It may be the result of injury, infection, or a congenital condition.
Cells that support the nerve cells (neurons) of the brain and spinal cord by providing nutrients and insulation.
A section of bone removed from the skull during craniotomy procedures.
A technique used to occlude a blood vessel. A variety of materials, including platinum coils and microscopic plastic particles, are injected into the vessel under fluoroscopy control to stop active bleeding or prevent bleeding.
Intracranial pressure (ICP):
The pressure within the skull exerted by the brain tissue, blood, and cerbrospinal fluid.
A computerized method of locating a point in space or in tissue, using coordinates in three-dimensions. During sterotactic surgery, the precise location of a tumor or other tissue can be identified from outside the body. The tissue can then be targeted for destruction.
The term originates from the Greek words stereo, meaning "three dimensional", and tactos, meaning "touched".