Though the variations of vertebral artery are clinically asymptomatic yet abnormalities are of diagnostic importance either prior to vascular surgery in the neck region or in patients of intravascular diseases such as arteriovenous malformations or cerebral aneurysms. Therefore, the aim of the study is to bring out 2 variations in the configuration of vertebral artery and their clinical implication. During dissection of thorax of 2 female cadavers, 2 different variants of configurations of left vertebral arteries were observed. In 1 patient, the left vertebral artery arose aberrantly from arch of aorta between left common carotid artery and left subclavian artery. This artery then, following oblique course, abnormally entered into foramen transversarium of C4 vertebra. In the second patient, the left common stump emerged from arch of aorta in the left side of left common carotid artery and then instantly bifurcated into vertebral artery and subclavian artery. Then following the usual oblique course, the left vertebral artery anomalously entered into foramen transversarium of C3 vertebra at the level of upper border of thyroid cartilage. The knowledge of these rare variations in the origin of vertebral artery is of paramount importance to surgeons performing surgery in neck region, radiologist performing angiography to avoid misinterpretation of radiographs and to anatomists for rare variations in academics and research. (C) 2017 by Mutaz B. Habal, MD.
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Αλέξανδρος Γ. Σφακιανάκης
ΩτοΡινοΛαρυγγολόγος
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Άγιος Νικόλαος Κρήτη 72100
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