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A large curtain like anterior tricuspid leaflet (A). All 3 leaflets show incomplete separation from the right ventricular myocardium with downward displacement of septal (S) and posterior (P) leaflets. Right ventricular sinus (V) is small (D) - Cribriform atrial septal defect.

 A large curtain like anterior tricuspid leaflet (A). All 3 leaflets show incomplete separation from the right ventricular myocardium with downward displacement of septal (S) and posterior (P) leaflets. Right ventricular sinus (V) is small (D) - Cribriform atrial septal defect.