A patient with cardiomegaly on Chest Xray

an unusual cause of massive cardiomegaly. Causes of biatrial enlargement include restrictive cardiomyop-athy, rheumatic heart disease, isolated mitral insuffi-ciency and constrictive pericarditis.12Clinicians and radiologists should consider this possibility while interpreting massive cardiomegaly on chest radiographs. Learning points ................
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