“…TVD, also called Ebstein' anomaly in humans, is characterized by different features: adherence of the tricuspid leaflets to the myocardium, downward displacement of the tricuspid annulus, dilation of the uppermost part of the right ventricle, redundancy and fenestrations of the anterior leaflet of tricuspid valve and dilation of the tricuspid annulus (Dearani et al, 2003;, Yuan et al, 2003;Andelfinger et al, 2003). Usually, the septal leaflet is displaced toward the apex and the anterior leaflet, the biggest in normal condition has a "sail like" appearance and is correctly positioned (Hetzer et al, 1998).…”