Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac and mediastinal silhouettes similar in appearance to prior . There has been interval clearing of bibasilar opacities seen on the most recent prior . There is no effusion . No pneumothorax . Stable appearance of the visualized bony thorax .
    OUTPUT:
    
Interval improvement in the appearance of the lung bases with clearing of previously identified parenchymal opacities .