Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs were obtained . Lungs remain hyperinflated . A small to moderate left pleural effusion is unchanged . There is no new consolidation or pneumothorax . Cardiac and mediastinal contours are normal . Thoracic spine degenerative changes are stable .
    OUTPUT:
    
1 . Minimal increase of a small left pleural effusion . 2 . Persistently hyperinflated lungs compatible with emphysema .