Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were provided . The heart is markedly enlarged , though this is unchanged . The aorta is unfolded with atherosclerotic calcifications noted . The lungs appear clear without focal consolidation , effusion , or pneumothorax . There is no pulmonary edema . Bony structures are intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
Stable marked cardiomegaly with no evidence of pneumonia or CHF .