Initial Study was MRI-IAMS - proceeded to MRI Brain following initial review
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Numerous tortous aberrant veins at the root entry zones of both IAMS, more pronounced on the right. On the right these are impinging on the facial and vestibulocochlear nerves.
The dilated veins are a consequence of bilateral dural AV fistulas between the branches of the external carotid artery and sigmoid/tranverse sinuses.
The fistulous communication is largest on the right with distal external carotid artery branches feeding into the sigmoid-tranverse sinus junction. The right transverse sinus is markedly dilated measuring 1.1cm, as are the superficial cerebral veins of both cerebral hemispheres.
Dilated tranossesous and meningeal arteries are also communicating with the venous sinuses at the base of skull.
Extensive periventricular high T2 signal.
Dilated anterior spinal vessel.