Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A tracheostomy tube terminates at midline . Bilateral diffuse parenchymal opacities have improved with more confluent consolidation seen at the left upper lobe and right lung base . No large pleural effusion or pneumothorax is identified . The cardiomediastinal and hilar contours are stable .
    OUTPUT:
    
Persistent improvement of diffuse bilateral parenchymal opacities .