Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . The heart remains moderately enlarged . The lungs are clear . Upper lobe lucency suggests underlying emphysema . The aorta is densely calcified . Imaged osseous structures are intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
Stable moderate cardiomegaly without superimposed acute process .