Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were obtained . The lungs are clear bilaterally without focal consolidation , effusion , or pneumothorax . No signs of CHF . The heart size is mildly enlarged , though stable in appearance . Hilar and mediastinal configuration is normal . Bony structures are intact . No free air below the right hemidiaphragm . No signs of pneumomediastinum .
    OUTPUT:
    
No pneumonia . Mild cardiomegaly , stable .