Vertebral artery partial duplication
Transient ischemic attack
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Two diferent origins for left vertebral artery are seen. One arises normally from left subclavian artery and the second arises from the aortic arch. Both vessels follow a parallel course before they link at V2 segment. Distal left vertebral artery follows a normal course to the vertebrovertebral junction.
An anomalous vertebral artery origin from the aortic arch is the most frequent anatomic variant of the supra-aortic trunk origin.
Duplication (partial or complete) and fenestration of the vertebral artery are found rarely, probably representing persistence of embryonic plexiform vessels.
- 1. Osborn AG. Cerebral angiography. Lippincott Williams & Wilkins: Philadelphia; USA.