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BMJ Case Rep. 2013 Apr 25;2013. pii: bcr2013010703. doi: 10.1136/bcr-2013-010703.

Resolution of trigeminal neuralgia by coil embolization of a persistent primitive trigeminal artery aneurysm.

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  • 1Department of Neurosurgery, Vanderbilt University, Nashville, Tennessee, USA. travis.r.ladner@vanderbilt.edu


The persistent primitive trigeminal artery (PTA) is a rare anastomosis between the carotid artery and basilar artery. While most PTAs are asymptomatic, lateral variants can occasionally compress the trigeminal nerve and precipitate trigeminal neuralgia. Aneurysms of the PTA are exceptionally rare in the literature and have not previously been associated with trigeminal neuralgia. We present the first case of an aneurysm of the PTA causing trigeminal neuralgia. The patient underwent coil embolization of the aneurysm which relieved her symptoms. We propose embolization as a viable therapeutic option for the resolution of trigeminal neuralgia when the condition is secondary to irritation by the high velocity pulsatile flow of an aneurysm.

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