Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left chest tube is stable in position . Interval improvement of the multifocal airspace opacities involving the lower lobes and left upper lobe . The opacity in the superior segment of the left lower lobe has slightly improved . Bilateral pleural effusions have also decreased . The heart is nonenlarged . Small apical pneumothorax is no longer seen .
    OUTPUT:
    
Interval improvement of the multifocal airspace opacities , and bilateral effusions .