Antenatal scan showing Ebstein's anomaly-In people who have Ebstein's anomaly, two leaflets of the tricuspid valve are displaced downward into the pumping chamber and the third leaflet is elongated and may be adherent to the wall of the chamber. The usual result is that the valve leaks blood into the right atrium when the right ventricle contracts. So the upper part of the right ventricle is part of the right atrium. This means that the right ventricle is too small and the right atrium is too large.The right atrium becomes enlarged and, if severe enough, congestive heart