Abstract
A persistent trigeminal artery (PTA) is a non-involuted embryonic vessel that connects the cavernous part of the internal carotid artery with the posterior circulation. In the adult, it is usually found incidentally but can be often associated with vascular malformation, cerebral aneurysm trigeminal neuralgia and even posterior circulation strokes. We report here a case of persistant trigeminal artery as a cause of trigeminal neuralgia and its aspects found in MR imaging.
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