Neuro Oncology Glossary
100 terms total — 24 showing — Last updated 15 Sep 2026
oligodendroglioma
A type of brain tumor arising from oligodendrocytes, characterized by fried-egg appearance on histology and often carrying 1p/19q codeletion.
dexamethasone
A potent corticosteroid medication used to reduce brain edema and intracranial pressure in patients with brain tumors.
diffusion-weighted imaging
An MRI technique measuring water molecule movement to differentiate tumor types and assess treatment response in brain t...
DIPG
Diffuse intrinsic pontine glioma, a rare and aggressive brainstem tumor primarily affecting children.
Eloquent Area
Brain regions responsible for critical neurological functions that, if damaged, would cause significant functional defic...
eloquent brain regions
Brain areas where damage would cause significant neurological deficit, crucial for surgical planning documentation.
eloquent cortex
Brain regions where damage would result in significant neurological deficits, requiring special surgical consideration.
enhancement kinetics
The temporal pattern of contrast uptake and washout in brain lesions during dynamic imaging studies, used to characteriz...
enhancing lesion
A brain abnormality that shows increased signal intensity after gadolinium contrast administration, indicating blood-bra...
ependymoma
A glial tumor arising from ependymal cells that line the ventricular system and central canal of the spinal cord.
extent of resection
The degree of tumor removal achieved during surgery, categorized as gross total, subtotal, or biopsy, with prognostic im...
FLAIR sequence
Fluid-attenuated inversion recovery MRI sequence that suppresses cerebrospinal fluid signal to better visualize brain le...
Functional MRI
Magnetic resonance imaging technique that maps brain activity by detecting blood flow changes during specific tasks.
gamma knife radiosurgery
A precise form of stereotactic radiosurgery using focused gamma rays to treat brain tumors and vascular malformations.
ganglioglioma
A mixed neuronal-glial tumor typically WHO Grade I, commonly presenting with seizures and showing characteristic biphasi...
glial fibrillary acidic protein
An intermediate filament protein specific to astrocytes, commonly used as an immunohistochemical marker for diagnosing g...
glioblastoma multiforme
The most aggressive primary brain tumor, requiring precise editorial handling of its complex staging and treatment termi...
glioma-associated seizures
Epileptic seizures that occur as a consequence of brain tumor growth and its effects on surrounding neural tissue.
gliomatosis cerebri
A rare diffuse glioma growth pattern characterized by extensive infiltration of multiple brain regions while preserving...
gross total resection
Complete surgical removal of visible tumor tissue, a key prognostic factor requiring precise editorial distinction from...
hydrocephalus
Abnormal accumulation of cerebrospinal fluid within the ventricles of the brain, often associated with brain tumors.
IDH-wildtype
A molecular classification indicating absence of IDH mutations, associated with more aggressive glioma behavior.
Immunohistochemistry Panel
A set of antibody-based stains used to identify specific proteins in tumor tissue for diagnostic classification.
infiltrative growth pattern
A characteristic tumor behavior where neoplastic cells invade and grow between normal brain tissue rather than forming a...
Intraoperative Monitoring
Real-time neurological function assessment during brain tumor surgery to guide safe resection and prevent deficits.