Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were provided demonstrating no focal consolidation , effusion , or pneumothorax . The heart is mildly enlarged . Mediastinal contour is normal . Bony structure is intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
Borderline cardiomegaly with no signs of pneumonia or CHF .