894913.fig.001a
(a)
894913.fig.001b
(b)
894913.fig.001c
(c)
Figure 1: (a) and (b) CTA indicates dominant left vertebral artery and hypoplastic right vertebral artery with minimal contribution in formation of the small basilar artery. (c) Lateral cervical spine X-ray in extension showing diffused degenerative changes with no evidence of cervical instability.