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Intracranial DAVFs are pathologic dural-based shunts and account for 10%-15% of all intracranial arteriovenous malformations. These malformations derive their arterial supply primarily from meningeal vessels, and the venous drainage is either via dural venous sinuses or through the cortical veins. DAVFs have a reported associated with dural sinus thrombosis, venous hypertension, previous craniotomy, and trauma, though many lesions are idiopathic. The diagnosis is dependent on a high level of clinical suspicion and high-resolution imaging. Cross-sectional imaging techniques by using CT and MR imaging aid in the diagnosis, but conventional angiography remains the most accurate method for complete characterization and classification of DAVFs. The pattern of venous drainage observed on dynamic vascular imaging determines the type of DAVF and correlates with the severity of symptoms and the risk of hemorrhage. |
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angiography,cerebral arteriovenous malformation arteriovenous malformation,cerebral CAT scan,angiography cavernous sinus cavernous sinus,syndrome chemosis digital subtraction angiography dural arteriovenous malformation dural sinus thrombosis endovascular therapy fistula,arterio-venous fistula,arterio-venous,dural fistula,arterio-venous,dural,classification intracerebral hemorrhage intracerebral hemorrhage,lobar malformation,vascular,dural MRI,abnormal proptosis proptosis,unilateral review article seizure subarachnoid hemorrhage tinnitus tinnitus,pulsatile treatment of neurologic disorder venous hypertension
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