Figure 1: (A). Schematic representation of the right and left side of the heart as viewed through a right and left thoracotomy, respectively. The anterior right (ARGP) lies within a fat pad located at the left of the sulcus terminalis between the right superior and right inferior pulmonary veins (RSPV, RIPV, respectively). The inferior right (IRGP) is located at the junction of the inferior vena cava (IVC) and the right and left atrium (RA, LA, respectively). (B). The location of the superior left (SLGP) is shown at the junction of the left pulmonary artery (LPA) and the left superior pulmonary vein (LSPV). The inferior left (ILGP) is located at the posterior aspect of the left inferior (LIPV). Smaller GP are found at the lower part of the ligament of Marshall (LOM) close to the coronary sinus. Other abbreviations: Superior Vena Cava (SVC); right and left ventricles (RV, LV, respectively).