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A, Apical 4-chamber echocardiogram image showing enlarged Eustachian valve (EV) just above the tricuspid valve (TV) with bowing of the atrial septum (AS) into the left atrium. B, Anteroposterior view during cardiac catheterization showing contrast preferentially entering the left atrium (LA) rather than the right ventricle (RV) with injection of contrast into the inferior vena cava.
