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International Journal of Morphology

On-line version ISSN 0717-9502

Abstract

INZUNZA, Oscar  and  BURDILES, Álvaro. Aberrant Subclavian Artery. Int. J. Morphol. [online]. 2010, vol.28, n.4, pp.1215-1219. ISSN 0717-9502.  http://dx.doi.org/10.4067/S0717-95022010000400036.

The anatomical variations involving the origin and passage of the right aberrant subclavian artery were studied, based on findings in a cadaver used for human anatomy teaching. In this case, the aortic arch gives rise to four separated branches, from right to left: right common carotid artery, left common carotid artery, left subclavian artery and right subclavian artery. From its origin, the right subclavian artery runs behind the trachea and esophagus, at the level of the third thoracic vertebrae, afterwards it reassumes its normal passage to the neck. The diameter of the aortic arch and its four branches were measured. In both vertebral arteries the diameter and distance from its origin in the subclavian arteries to the origin of the subclavian arteries were measured, with the purpose of analyzing potential important asymmetries. The probable embryologic explanations for this anomaly are discussed.

Keywords : Right aberrant subclavian artery; Arteria lusori; Anatomical variation.

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