Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Aeration of the right lung has improved since the prior study . A moderate - to - large right pleural effusion has slightly increased . Right apical post-radiation scarring are stable . There is unchanged shift of the upper mediastinum towards the right . The left lung is clear with the exception of a small left pleural effusion . A right - sided PICC line has been removed .
    OUTPUT:
    
Minimal improvement in right lung aeration . Bilateral pleural effusions and partial right upper lobe scarring .