Heart and thorax Aberrant subclavian artery (ARSA) read more Atrioventricular septal defect (AVSD) Cardiomegaly Congenital cystic adenomatoid malformation (CCAM) Double aortic arch (DAA) Echogenic focus read more Large ventricular septal defect (VSD) Persistent left superior vena cava (PLSVC) read more Persisten left superior vena cava (PLSVC) Reversed flow in pulmonary artery Small ventricular septal defect (VSD) Transposition of great vessels (TGV)