Aortic arch anomalies classifications bovine arch

Aortic arch anomalies Microchapters
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Associate Editor-In-Chief: Cafer Zorkun, M.D., Ph.D. [2] Keri Shafer, M.D. [3] Priyamvada Singh, MBBS [[4]]

Assistant Editor-In-Chief: Kristin Feeney, B.S. [[5]]

Bovine Arch

The bovine arch, refers a common branching patten variant of the aortic arch, where the brachiocephalic artery (aka innominate) shares a common origin with the left common carotid artery.

In actuality it is a misnomer as the true bovine arch - i.e that found in cattle - comprises a common single brachiocephalic trunk which trifurcates into bilateral subclavian arteries and a single bicarotid trunk. This variation is very rare in humans.

(Images shown below are courtesy of radiopaedia.org)

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  Normal anatomy
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  Aortic variations: Bovine arch
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  Aortic variations: True Bovine arch
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  Aortic variations: Left common carotid has its origin from brachiocephalic trunk

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  MSCT: Bovine arch
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  MSCT: Bovine arch
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  MSCT: Bovine arch
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  MSCT: Bovine arch
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  MSCT: Bovine arch

Diagnosis

A bovine arch may be observed through multiple diagnostic techniques:

• MRI
• CT