Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate hyperexpanded lungs without interstitial abnormality to suggest amiodarone toxicity . The remainder of the exam is unchanged , with a similar appearance of the tortuous aorta and a heart which is normal in size .
    OUTPUT:
    
Hyperexpanded lungs suggestive of COPD . No interstitial abnormality to suggest amiodarone toxicity .