Transposition of the great arteries (TGA) comprises dextro-TGA and levo-TGA (L-TGA). In dextro-TGA, the aorta, arising from the right ventricle (RV), is positioned to the right of the pulmonary artery (PA) [1]. Coexisting septal defects allow blood to mix and sustain life. In l-TGA, the aorta is positioned to the left of the PA, often linked with ventricular inversion (congenitally-corrected TGA-ccTGA). A clue of cc-TGA is cardiomegaly with an “egg-on-string” or “egg-on-its-side” cardiomediastinal silhouette, subsequently confirmed by echocardiography [1].
