Figure 5b. Aberrant right subclavian artery. (a) Sagittal 3D partition obtained in another patient shows an aberrant right subclavian artery (arrow) passing posterior to the trachea and esophagus. (b) Oblique sagittal MIP image shows the aberrant right subclavian artery (straight arrow), which is associated with a diverticulum of Kommerell. In addition, there is a small ductus bump (curved arrow).