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AJNR - American Journal of Neuroradiology

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American Journal of Neuroradiology 28:976-980, May 2007
© 2007 American Society of Neuroradiology

Case Report
HEAD & NECK

Cervical Vertebral Artery Variations: An Anatomic Study

S.R. Satti^a, C.A. Cerniglia^b and R.A. Koenigsberg^a

^a Department of Diagnostic Radiology, Hahnemann University Hospital, Drexel University College of Medicine, Philadelphia, Pa
^b Department of Imaging Sciences, University of Rochester Medical Center, University of Rochester School of Medicine and Dentistry, Rochester, NY

Please address correspondence to Sudhakar Satti, MD, Department of Diagnostic Radiology, Hahnemann University Hospital, Drexel University, M.S. 206, Philadelphia, PA 19102; e-mail: srsatti{at}gmail.com

SUMMARY: In this article, we present 5 cases of uncommon anomalous vertebral arteries and discuss the possible embryologic etiologies. These cases include a left vertebral artery as the 2nd branch off the left subclavian, a left vertebral artery with 2 origins, a right vertebral artery arising as the last branch off the aorta, a right vertebral artery arising as the 2nd branch off the right subclavian artery, and right vertebral artery with proximal duplication as the 2nd branch off the right subclavian artery.