Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Of note , the study is somewhat limited due to patient rotation . There is interval improvement of previously noted right moderate - to - large pneumothorax status post chest tube placement with small residual pneumothorax and partial re-expansion of the right lung . The right chest tube is seen projecting over the right lung apex . The left lung remains grossly clear . There is no focal consolidation in the left lung . The heart size is normal . S shaped scoliosis is unchanged . Extensive subcutaneous emphysema is noted along the right chest wall .
    OUTPUT:
    
Significant interval improvement of previously noted right moderate to large pneumothorax status post chest tube placement . Substantial atelectasis right lower lobe .