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<p>We report an observation of a right aortic arch with an isolated left subclavian artery (Edwards III-C) occurring in association with a supernumerary transitional cervicothoracic vertebra. As a unique feature, reconstitution of the left subclavian artery involved a left vertebral <i>arteria lusoria</i>, resulting in the formation of a composite anomalous vessel that mimicked an aberrant subclavian artery, followed a retroesophageal course, and passed through the foramen transversarium of the supernumerary vertebra.</p>

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Supernumerary transitional cervicothoracic vertebra and interrupted left subclavian artery reconstituted by a left vertebral arteria lusoria crossing a foramen transversarium

  • 期刊论文

  • 发表日期：

    2026年2月19日

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  • Philippe Gailloud,
  • Allison L. Machnicki

摘要

We report an observation of a right aortic arch with an isolated left subclavian artery (Edwards III-C) occurring in association with a supernumerary transitional cervicothoracic vertebra. As a unique feature, reconstitution of the left subclavian artery involved a left vertebral arteria lusoria, resulting in the formation of a composite anomalous vessel that mimicked an aberrant subclavian artery, followed a retroesophageal course, and passed through the foramen transversarium of the supernumerary vertebra.