The Right Subclavian Artery Arising as the First Branch of a Left-Sided Aortic Arch

World J Pediatr Congenit Heart Surg. 2014 Jul;5(3):456-9. doi: 10.1177/2150135113519457.


We describe an unusual pattern of branching of a left-sided aortic arch in which the first branch is the right subclavian artery, followed by the common carotid arteries arising from a common trunk. The patient was born with transposition (concordant atrioventricular and discordant ventriculoarterial connections) and had 18q23 deletion. We discuss the implication of these anatomic findings in the light of inferences currently made by echocardiographers when the first branch of the aortic arch fails to bifurcate. We also relate the findings to the concepts of cardiac development and draw comparisons with previous descriptions, and interpretations of the morphogenesis, of the patterns of branching from the aortic arch.

Keywords: 18q23 deletion; double aortic arches; embryonic development.

Publication types

  • Case Reports

MeSH terms

  • Aorta, Thoracic / abnormalities*
  • Aorta, Thoracic / diagnostic imaging
  • Aorta, Thoracic / surgery
  • Computed Tomography Angiography
  • Echocardiography
  • Female
  • Humans
  • Imaging, Three-Dimensional
  • Infant
  • Subclavian Artery / abnormalities*
  • Subclavian Artery / diagnostic imaging
  • Subclavian Artery / surgery
  • Vascular Malformations / diagnosis*
  • Vascular Malformations / surgery
  • Vascular Surgical Procedures / methods*