J Korean Neurosurg Soc.  2009 May;45(5):297-299. 10.3340/jkns.2009.45.5.297.

Anomalous Variations of the Origin and Course of Vertebral Arteries in Patients with Retroesophageal Right Subclavian Artery

Affiliations
  • 1Department of Neurosurgery, School of Medicine, Catholic University of Daegu, Daegu, Korea.
  • 2Department of Radiology, School of Medicine, Seoul National University, Seoul, Korea. aronnn@empal.com

Abstract

We present two rare cases of anomalous vertebral artery (VA) with retroesophageal right subclavian artery. One patient had a right VA arising from the right common carotid artery (CCA), and a left VA originating from the third branch off the aorta. Both VAs ascended anteriorly to the transverse foramen of C5 to C6 vertebra and entered the transverse foramen of C4. The other patient had a right VA arising from the right CCA and entering the transverse foramen of C5. The presence of anomalous variations of the origin and course of vertebral artery might have serious implications in angiographic and surgical procedures, and it is of great importance to be aware of such a possibility.

Keyword

Subclavian artery; Vertebral artery; Variations

MeSH Terms

Aorta
Carotid Artery, Common
Humans
Spine
Subclavian Artery
Vertebral Artery
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