Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since ___ , the right lung appears better aerated with residual bibasilar atelectasis . The left lung is clear . The heart size is unchanged . No pneumothorax or pulmonary edema . No subcutaneous emphysema is seen .
    OUTPUT:
    
Slight improvement in right lung aeration since ___ with residual bibasilar atelectasis . No pneumothorax or subcutaneous emphysema .