Abstract
The most frequent persistent embryonic communication between the vertebrobasilar and carotid systems in adult life is a persistent trigeminal artery (PTA). Several anatomic variants of PTA have been described. The other associations of PTA mainly include aneurysm and vascular steal phenomena between basilar and carotid systems. We describe an interesting case of PTA with bilateral ophthalmoplegia and contralateral occlusion of the internal carotid artery.
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