Neuro Surgery

21 March, 2020

Neuro Surgery

The VA is classically described as originating as the first branch of the ipsilateral subclavian artery. The VA origin is variable and has been identified at the aortic arch, CCA, and ICA. The most common aberrant origin, where the left VA originates from the aortic arch, between the left CCA and left subclavian artery, occurs in 2.4% to 5.8% of cases. The VA arising from the carotid artery is an extremely uncommon variant.1 We describe a case of 45 year old male presented with Hemifacial spasm in which on digital substraction angiography we found aberrant origin of left vertebral artery from left common carotid artery.

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