Right Aortic Arch With Aberrant Left Subclavian Artery

  • Etiology: congenital, ligamentum arteriosum completes the ring
  • Imaging: right arch, aberrant left subclavian artery, may cause airway compression, has diverticulum of Kommerall which is bulbous configuration of portion of residual dorsal aorta at origin of an aberrant left subclavian artery, descending aorta usually right sided, left sided ligamentum arteriosum completes the ring extending between left pulmonary artery + diverticulum, ductus is opposite side of aortic arch + arises from junction between diverticulum and normal sized subclavian artery, if there is no diverticulum, ductus is on same side as aortic arch and there is no ring
  • UGI: posterior indentation on the esophagus
  • Clinical: second most common vascular ring, most common right arch, rarely associated with congenital heart disease

Cases of Right Aortic Arch With Aberrant Left Subclavian Artery

CXR of right aortic arch with aberrant left subclavian artery
CXR shows a right side aortic arch. Echocardiogram showed an aberrant left subclavian artery.