Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Two views of the chest demonstrate clear lungs without pleural effusion or pneumothorax . The cardiac silhouette is normal in size , the mediastinal contours are normal . There is no radiopaque foreign body seen . The pulmonary vasculature is normal . Lungs are mildly hyperinflated .
    OUTPUT:
    
No acute chest abnormality and no evidence of radioopaque foreign body . Hyperinflated lungs suggestive of underlying COPD .