Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded without focal opacities . Moderate - to - severe cardiomegaly is unchanged from prior . There is no pleural effusion or pneumothorax . There is stable elevation of the left hemidiaphragm . No evidence of subdiaphragmatic free air .
    OUTPUT:
    
Moderate - to - severe cardiomegaly . No evidence of subdiaphragmatic free air .