Tetralogy of Fallot S.Manohar, MD Article Published: Aug 16, 2004 Madurai, India. These are the antenatal scans of a fetus with Tetralogy of Fallot. The following features are demonstrated: 1.Large subaortic ventricular septal defect 2.Overriding of the aorta (nearly 50%) 3.Pulmonary stenosis (valvular) Discussion Board Start a discussion about this article Add to Favorites Favorite