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Figure 1: Volume-rendered images (a and b) and oblique axial maximum intensity projection image (c) of computed tomography angiography shows left-sided aortic arch crossing the midline (indicated by *) posterior to the trachea (T) and the esophagus (E). A Kommerell's diverticulum (indicated by #) giving rise to an aberrant RSCA is seen with a ductus arteriosus connecting the descending aorta to the RPA also noted. RCCA: Right common carotid artery, LCCA: Left common carotid artery, RPA: Right pulmonary artery, RSCA: Right subclavian artery

Figure 1: Volume-rendered images (a and b) and oblique axial maximum intensity projection image (c) of computed tomography angiography shows left-sided aortic arch crossing the midline (indicated by *) posterior to the trachea (T) and the esophagus (E). A Kommerell's diverticulum (indicated by #) giving rise to an aberrant RSCA is seen with a ductus arteriosus connecting the descending aorta to the RPA also noted. RCCA: Right common carotid artery, LCCA: Left common carotid artery, RPA: Right pulmonary artery, RSCA: Right subclavian artery