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AJNR - American Journal of Neuroradiology

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American Journal of Neuroradiology 24:323-325, March 2003
© 2003 American Society of Neuroradiology

Case Report
HEAD AND NECK

Aortic Arch Origin of the Left External Carotid Artery and Type II Proatlantal Fetal Anastomosis

Michael Horowitz^a, Surendra Bansal^b and Kush Dastur^b

^a Department of Neurosurgery and Radiology, Presbyterian Hospital, University of Pittsburgh Medical Center, PA
^b Department of Radiology, Mercy Hospital, Pittsburgh, PA

Address reprint requests to Michael Horowitz, MD, Department of Neurosurgery, Suite B400, 200 Lothrop Street, Pittsburgh, PA 15238

Summary: This case report demonstrates a rare vascular pattern of a left external carotid artery (ECA) that arises directly from the aortic arch (AA), along with a type II proatlantal-vertebral artery anastomosis. Our research shows no report of an ECA arising from the AA. This, in association with a type II proatlantal anastomosis, is interesting because of its apparent rarity.

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