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Congenit Heart Dis. 2012 May-Jun;7(3):E25-30. doi: 10.1111/j.1747-0803.2011.00625.x. Epub 2012 Feb 7.

Type B interrupted left aortic arch with isolated right subclavian artery.

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  • 1Division of Pediatric Cardiology, Department of Pediatrics, Texas Children's Hospital, Baylor College of Medicine, 6621 Fannin St., Houston, TX 77030, USA.


Interrupted aortic arch is a rare congenital heart malformation occurring in approximately three per 1 million births. Type B interrupted aortic arch (interruption between the second carotid artery and the ipsilateral subclavian artery) is the most common of three major types (A, B, and C). We report an extremely rare finding: a case of left-sided type B interrupted aortic arch with isolation of the right subclavian artery (origin from the right pulmonary artery).

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