An unusual variant of common arterial trunk

A common arterial trunk is a solitary arterial trunk leaving the heart through a common valve and directly supplying the systemic, pulmonary and coronary arteries. 1 Under this unifying feature, variability exists with regard to the commitment of the common trunk to the ventricular mass, the state of the truncal valve, the morphology of the ventricular septal defect, the pattern of origin of the pulmonary arteries and the arrangement of the aortic arch. 1–5 Understanding this spectrum of morphologic features is of great importance in the total surgical correction of hearts with this malformation. 4