Unoperated “congenitally corrected” TGA shown by CMR. Both the atrioventricular and the ventriculoarterial connections are discordant (A and B). Note the expected apical displacement of the septal insertion of the tricuspid valve of the RV relative to that of the mitral valve of the LV and the hypertrophied muscle of the systemic RV. In the mid short-axis image (C), the LV cavity can be identified as the one on the smoother, less trabeculated sides of the ventricular septum. Abbreviations: Ao, aorta; LA, left atrium; RA, right atrium.