Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As before the lungs are mildly hyperexpanded . The cardiomediastinal silhouette , hilar contours , and pleural surfaces are normal . There is no pleural effusion or pneumothorax . There is no focal consolidation .
    OUTPUT:
    
No focal consolidation . Mild hyperexpansion of the lungs may reflect COPD as before .