Figure 1: View of the posterior aspect of the aorta in a heart with TGA and single coronary ostium from the posterior facing sinus (single RCA, Figure 14C). The LCA is much longer than usual and passes posterior to the pulmonary artery (MPA). Ao- aorta, LAD anterior descending artery, LCA left coronary artery, LCx circumflex artery, RCA right coronary artery, SN sinus node artery.