Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are well expanded without new focal airspace opacity . Left lower lobe opacity has improved . Probable trace bilateral pleural effusions . A right chest tube is grossly unchanged in position . Heart size is normal . Cardiomediastinal and hilar silhouettes are normal , noting an adjacent soft tissue density almost certainly representing the neo esophagus .
    OUTPUT:
    
Improved left lower lobe opacities , likely atelectasis . No other significant change .