Trigeminal Neuralgia Caused by Compression of a Tortuous Internal Carotid Artery and Associated Congenital Agenesis of the Contralateral Internal Carotid Artery in a 4-Year-Old Boy

Abstract

We report a 4-year-old patient with trigeminal neuralgia. Magnetic resonance (MR) imaging and computed tomography (CT) studies demonstrated congenital absence of the right internal carotid artery (ICA) with compensatory dilatation and tortuosity of the left carotid siphon, presumably compressing the maxillary branch of the left trigeminal nerve, resulting in trigeminal neuralgia.