Figure 16. Right aortic arch with an ALSA without Kommerell diverticulum in a 20-year-old man who underwent total correction surgery for Tetralogy of Fallot. (A-C) Serial axial and coronal computed tomography angiographic images show a right sided aortic arch with a non-dilated ALSA. The branch arteries arise from the right aortic arch in order of LCCA, RCCA, RSA, and ALSA.
ALSA: aberrant left subclavian artery, LCCA: left common carotid artery, RCCA: right common carotid artery, RSA: right subclavian artery.