CTICasesCervical Aortic Arch with Separate Arch Origins of Left Carotid Arteries
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Imaging findings
A teenager with a history of coarctation repair and reimplantation of a stenotic left subclavian artery. The aortic arch is observed to be abnormally high in the neck (cervical arch). The branching pattern of the left arch vessels, which was untouched by surgery, shows separate origins for the left vertebral artery, left external carotid artery, and left internal carotid artery directly from the arch, rather than a common left carotid artery.
Key takeaways
Cervical aortic arch is a rare congenital anomaly where the aortic arch extends unusually high into the neck. A characteristic feature often seen with cervical arches is the absence of a common carotid artery on the left, with separate arch origins for the left external and internal carotid arteries. This is distinct from a "bovine arch," which refers to a single brachiocephalic trunk.
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