Curing DAVF type II progression
DAVF (Intracranial dural arteriovenous fistula) is thought to be an acquired arteriovenous (AV) shunting disease, perhaps developing after venous sinus occlusion. DAVF is categorized as benign or aggressive depending on the pattern of venous drainage revealed by digital subtraction angiography.
Introduction
DAVF is connection between the meningeal arteries and veins. The following areas are the main site; lateral sinus, cavernous sinus, and sigmoid sinus. Some studies of intracranial vascular malformations showed 10-15% as DAVF. Their age presentation is between 40 to 60 years (7). It is accepted and agreed upon that DAVFs are acquired presenting later in life than AVMs (Arterio venous Malformations).(12) Brain tumor surgery, head injuries, or brain infection could be complicated with DAVF. Many neurologic symptoms may be associated with DAVF. These are secondary to ischemia and hemorrhage. These complications features may rate 3 - 11%.(10,16)
Considerable number of cases present with ear symptoms (pulsatile tinnitus). Some studies showed 2 - 20% of DAVF cases with ear symptoms. (8, 9, 14)
But the majority of DAVFs may remain a symptomatic. There are good reports of cases that have spontaneously resolved. Such findings suggesting higher incidence of DAVF than the reported studies. (11,13)
The signs and symptoms are depending on the location of the fistula which is highly variable (19). Of the common non ophthalmic presentation of DAVFis pulsatile tinnitus and intracranial murmur. Of the ocular symptoms in cases with drainage by the ophthalmic veins are; conjunctival dilated vessels, exophthalmos, visual disturbance, and oculomotor paralysis.(17)
Our case is completely asymptomatic and accidentally discovered on routine eye examination for glasses.
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