Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were obtained . The lungs appear clear , though low lung volumes somewhat limits evaluation . No definite signs of pneumonia or CHF . No pleural effusion or pneumothorax . The heart size is mildly enlarged , though this is unchanged from the prior exam . The mediastinal contour appears normal . Bony structures are intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
Stable mild cardiomegaly . Otherwise , unremarkable .