Fact-sheet: Arteriovenous malformation of brain
Updated on 08/23/2017 at 6:43 AM
View all RADEOS cases associated with this fact-sheet
Definition
Cerebral arteriovenous malformation, including intracranial dural arteriovenous fistulas.
Congenital in origin
Clinical features
Seizures
Headaches
Intracranial bruit
CT
Vascular pedicle: central nidus, occasionally calcified
Draining vein
Complication in case of ruptured AVM: intraparenchymal Hematoma/intraventricular hemorrhage
MRI
Serpiginous hypointense images.
Vascular intervention
Angiography: key diagnostic examination
Management
Neurosurgical resection
Endovascular embolization
Stereotactic radiosurgery
Classification
Spetzler-Martin classification: assessment of surgical risk
-Nidus size: 6 cm (3 pts)
-Draining veins: superficial drainage only (0 pt), deep drainage (1 pt)
-Location: non-eloquent area (0 pt), adjacent to an eloquent area* (1 pt)
Sum of points: grade 1 to 5
-Grade 1: small AVM with superficial venous drainage located in a non-eloquent area.
-Grade 5: large AVM involving an eloquent area with deep venous drainage.
*Eloquent areas: sensorimotor cortex, visual cortex, thalamus, hypothalamus, internal capsule, brainstem, cerebellar peduncles, deep cerebellar nuclei.