Four children with systolic thrills and harsh pansystolic murmurs in the second left and right intercostal spaces, radiating to the base of the neck, and suspected of having a subaortic ventricular septal defect and possible aortic prolapse underwent angiocardiography using axial projections. All demonstrated an unusual "tunnel-like" track into the right ventricle and no subaortic ventricular septal defect or prolapse. In our opinion, these physical findings suggest this abnormality and that axial angiography clearly delineates the lesion.