A case report of the right vertebral artery’s origin as a unique ‘trifurcation’ involving the brachiocephalic trunk, right common carotid artery, and the right vertebral artery
Published 2025-07-10
Keywords
- anomalous origin of right vertebral artery,
- right vertebral artery origin as a ‘trifurcation’,
- dilatation at the proximal and distal end of the right vertebral artery
How to Cite
Copyright (c) 2025 Cheryl Melovitz-Vasan, Susan Huff, Nagaswami Vasan

This work is licensed under a Creative Commons Attribution 4.0 International License.
Abstract
While the anomalous origin of the left vertebral artery is more often reported, the atypical right vertebral artery arising from the aortic arch is sparsely recognized. During the dissection of a donor’s body, we recognized that the right vertebral artery arose as a ‘trifurcation’ from the aortic arch distal to the right subclavian artery. Intrigued, we explored the arterial branching further to realize a unique pattern not seen in earlier reports. The trifurcation involved the brachiocephalic trunk, right common carotid, and right vertebral artery. It is essential to recognize the possibility of people living normally without symptoms due to some anomalous arterial pattern.
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