Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Small - to - moderate bilateral pleural effusions are unchanged or mildly improved allowing for differences in positioning . Left sided aeration is improved with residual left lower lobe atelectasis . No pneumothorax seen . Tracheostomy tube , nasogastric tube , and feeding tube are unchanged in appearance . Heart size and cardiomediastinal contours are unchanged .
    OUTPUT:
    
Improved aeration of the left lung with small - to - moderate bilateral pleural effusions .