Deleu Dirk, Mesraoua Boulenouar
Department of Neurology (Medicine), Hamad Medical Corporation, Doha, State of Qatar.
Saudi Med J. 2005 Oct;26(10):1640-2.
A 32-year-old man presented with left hemifacial spasm. Neurophysiological findings revealed an absent ipsilateral R1 on blink reflex. An MRI showed a dolichoectatic left vertebral artery impinging on the root exit zone of the left facial nerve. Botulinum toxin infections relieved the manifestations of hemifacial spasm. This case demonstrates that MRI/MRA is an essential part of the work-up for hemifacial spasm, and shows that in accordance with the literature, vertebral dolichoectasia is an uncommon cause of hemifacial spasm.
一名32岁男性出现左侧面肌痉挛。神经生理学检查结果显示眨眼反射时同侧R1波消失。磁共振成像（MRI）显示左侧椎动脉迂曲扩张，压迫左侧面神经的神经根出口区。肉毒杆菌毒素注射缓解了面肌痉挛的症状。该病例表明，MRI/MRA是面肌痉挛检查的重要组成部分，并且表明，与文献一致，椎动脉迂曲扩张是面肌痉挛的罕见病因。
