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Superior cerebellar artery aneurysms associated with infratentorial arteriovenous malformations

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      Abstract

      We describe three patients with aneurysms arising from the superior cerebellar artery feeding an arteriovenous malformation (AVM) in the posterior fossa. In one patient the aneurysms resolved following thrombosis of the AVM, suggesting that high flow through the feeding vessel is an etiological factor for aneurysm development. The usual presentation is subarachnoid hemorrhage but the outcome of surgical treatment of these lesions is often poor, suggesting an increasing role for interventional neuroradiology in the future.

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