Presentation
Transient arm weakness. ? TIA
Patient Data
Age: 95 years
Gender: Female
From the case:
Persistent hypoglossal artery and bovine arch
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Axial C+ arterial phase
- large persistent hypoglossal artery arising from the distal right cervical ICA at the level of C2/3
- the vessel passes through an enlarged hypoglossal canal to join the basilar artery
- absent right vertebral artery and diminutive left vertebral artery noted
- no aneurysms or large vessel occlusion
- bovine aortic arch also noted
Case Discussion
This case illustrates two vascular anatomical variants of both the aortic arch (bovine arch) and of the persistent carotid-vertebrobasilar anastomoses (persistent hypoglossal artery)
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