Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral views of the chest were provided . The lungs are clear , though lung volumes are low . No signs of pneumonia or CHF . No pleural effusion or pneumothorax . The heart is mildly enlarged . The aorta is normal in contour . The bony structures are intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
Mild cardiac enlargement without signs of edema or pneumonia .