NMC Case Report Journal
Online ISSN : 2188-4226
ISSN-L : 2188-4226
Trigeminal Neuralgia Caused by a Persistent Primitive Trigeminal Artery Variant and Superior Cerebellar Artery
Kenji MikiYoshihiro NatoriMegumu MoriYasutoshi KaiTetsuhisa YamadaNaoki Noguchi
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JOURNALS OPEN ACCESS FULL-TEXT HTML Advance online publication

Article ID: cr.2018-0279


Trigeminal neuralgia is caused by compression of the trigeminal nerve by arteries or veins in the posterior fossa. A persistent primitive trigeminal artery variant (PPTAv) is an anomalous artery that may cause trigeminal neuralgia. A 65-year-old man presented with left facial pain. Brain magnetic resonance imaging revealed a PPTAv. Constructive interference in steady state showed that both the PPTAv and the superior cerebellar artery (SCA) compressed the trigeminal nerve. Thus, we performed microvascular decompression and the patient’s symptoms improved. PPTAv is a rare anomaly in the posterior fossa that can cause trigeminal neuralgia. Dual compression of the trigeminal nerve by the SCA and PPTAv demonstrates that trigeminal neuralgia may originate from multiple sources. It is therefore important to check preoperative images to adequately treat trigeminal neuralgia.

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© 2019 The Japan Neurosurgical Society

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