Figure 12

Right aortic arch with aberrant left subclavian artery in a 61-year-old man with an unruptured cerebral aneurysm. a: Arch aortography, frontal view. b: Right anterior oblique view. The left common carotid artery, right common carotid artery, and right subclavian artery branch off the aortic arch in that order, finally wrapping around the posterior side of the trachea and esophagus with a protruding Kommerell’s diverticulum, which is the vestige of the left aortic arch. Stenosis and post-stenotic dilatation of the aberrant left subclavian artery are visible beyond Kommerell’s diverticulum.