Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are moderately inflated , compatible with COPD . The heart is top normal or mildly enlarged . Chronic biapical scarring is mild . There is no sign of acute pulmonary edema . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
The heart is top normal or slightly enlarged . There is no pulmonary edema .