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Case Reports
. 2001 Jan;41(1):8-11; discussion 11-2.
doi: 10.2176/nmc.41.8.

High incidence of arterial dissection associated with left vertebral artery of aortic origin

M Komiyama  1 , T Morikawa, H Nakajima, M Nishikawa, T Yasui
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Free article
Case Reports

High incidence of arterial dissection associated with left vertebral artery of aortic origin

M Komiyama et al. Neurol Med Chir (Tokyo). 2001 Jan.
Free article

Abstract

The incidences of arterial dissection of the vertebral artery (VA) of aortic origin and VA of subclavian artery origin were determined. The origins of the left and right VAs were confirmed by angiography in 860 and 717 patients, respectively. Left VA of aortic origin was found in 21 patients (6 females and 15 males) but no right VA of aortic origin was found. Left VA of left subclavian artery origin was found in 837 patients and right VA of right subclavian artery origin in 717 patients. Arterial dissection of the VA occurred in 17 patients (6 females and 11 males), four patients with left VA of aortic origin, seven with left VA of left subclavian artery origin, four with right VA of right subclavian artery origin, and two with bilateral VAs of subclavian artery origin. Left VA of aortic origin (4 of 21 patients) was associated with a significantly higher incidence of VA dissection than left VA of left subclavian artery origin and right VA of right subclavian artery origin (p < 0.001). Left VA of aortic origin is associated with a predilection for VA dissection in comparison to VA of subclavian artery origin.

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