Case report reveals bilateral transverse sinus occlusion rerouting venous drainage anteriorly in an occipital AVM, highlighting alternate orbital pathways.
A patient with an occipital dural arteriovenous malformation (AVM) developed signs of a carotid-cavernous sinus fistula and raised intracranial pressure. Bilateral transverse sinus occlusion associated with the AVM produced these signs by rerouting intracranial venous drainage anteriorly through the cavernous sinuses and superior ophthalmic veins. Angiography and computerised tomographic reformation techniques were used to define these extraordinary cranio-orbital venous pathways.
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Buchanan et al. (1982) studied this question.
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