Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Stable tracheostomy tube in standard position . Significant interval improvement of the multifocal airspace opacities , which for more pronounced throughout the left lung . There is residual airspace opacity in the left lower lobe . Stable appearance of postsurgical and volume loss in the right lung , with small effusion .
    OUTPUT:
    
Significant , rapidly improving multifocal airspace opacity is recoverable edema .