Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The lungs are hyperinflated , compatible with known history of COPD . There is no pneumothorax , focal consolidation , or pleural effusion .
    OUTPUT:
    
Hyperinflated lungs , compatible with known history of COPD . No superimposed acute intrathoracic process .