Cardiophile MD

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Mitral stenosis with pulmonary hypertension: Double atrial contour seen on the right cardiac border as ’shadow in shadow’ indicating left atrial enlargement. Right border is shifted to right suggesting right atrial enlargement. Bulge along the left upper border is due to enlarged pulmonary artery at the top and [...]

Cardiomegaly with right atrial enlargement can be seen in tricuspid valve disease (stenosis or regurgitation). The large right atrium in Ebstein’s anomaly of tricuspid valve produces a similar picture. A huge right atrium can also be there in a restrictive cardiomyopathy like endomyocardial fibrosis. Right atrial enlargement causes rightward enlargement of the cardiac outline.