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Anomalous branching pattern of the aortic arch and its clinical applications

G L Shiva Kumar1, N Pamidi, S N Somayaji

  • 1Kamineni Institute of Medical Sciences, Narkatpally, Nalgonda, Andhra Pradesh, India.

Singapore Medical Journal
|December 9, 2010
PubMed

Insights

This study details a rare aortic arch variation where the left common carotid and right vertebral arteries originated from the brachiocephalic trunk. The left vertebral artery arose from the aortic arch, impacting cerebral hemodynamics.

Area of Science:

  • Anatomy
  • Vascular Biology
  • Radiology

Background:

  • The aortic arch typically branches into the brachiocephalic trunk, left common carotid artery, and left subclavian artery.
  • Variations in aortic arch branching are infrequent but can have significant clinical implications.

Observation:

  • A rare anatomical variation was identified involving the aortic arch's arterial origins.
  • Specifically, the left common carotid artery and right vertebral arteries originated from the brachiocephalic trunk.

Findings:

  • The left vertebral artery was observed arising from the aortic arch, proximal to the left subclavian artery origin.
  • This represents a significant deviation from the typical branching pattern.

Implications:

  • Aortic arch variations can alter cerebral hemodynamics, potentially leading to neurological abnormalities.
  • Understanding these variations is crucial for diagnosing conditions like intracranial aneurysms post-subarachnoid hemorrhage.

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