Retroesophageal Right Subclavian Artery

Figure 1

Origin of right subclavian artery from arch of aorta distal to left subclavian artery. AOA: arch of aorta, DsA: descending thoracic aorta, LSCA: left subclavian artery, LCCA: left common carotid artery, E: esophagus, T: trachea, RCCA: right common carotid artery, and RSCA: right subclavian artery.