Neurosurgery Glossary
This glossary contains concise definitions of terms commonly used in neurosurgery.
A
Aneurysm A localized balloon-like dilation of an artery caused by a weakness in the arterial wall, often occurring in the circle of Willis.
AVM (Arteriovenous Malformation) A congenital vascular anomaly where arteries connect directly to veins without capillaries, potentially causing hemorrhage.
B
Burr Hole A small hole drilled into the skull to relieve pressure or allow access for surgery or catheter placement.
C
Chiari Malformation A structural defect where brain tissue extends into the spinal canal, often involving the cerebellar tonsils.
Craniotomy A surgical procedure where part of the skull is removed to access the brain.
D
Dural Tear An unintended opening in the dura mater, which can cause cerebrospinal fluid leakage.
E
EVD (External Ventricular Drain) A temporary catheter placed in the ventricles to drain CSF and monitor intracranial pressure.
G
Glioblastoma The most aggressive and common malignant brain tumor in adults, classified as WHO grade IV.
S
Subdural Hematoma A collection of blood between the dura mater and the arachnoid membrane, usually due to trauma.
Stereotactic Surgery A minimally invasive form of surgical intervention that uses a three-dimensional coordinate system to locate small targets inside the body.