Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . There is deviation of the trachea to the right . There has been substantial interval improvement of the left apical pneumothorax . There are stable mild emphysematous changes throughout the lungs . No focal consolidations concerning for infection are identified . There are stable small bilateral pleural effusions . The visualized osseous structures are unremarkable .
    OUTPUT:
    
No evidence of a pneumothorax . Stable small bilateral pleural effusions .