Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval placement of a right - sided chest tube with pigtail projecting over the right mid lung field . There has been interval resolution of the previously noted right hydropneumothorax with re-expansion of the right lung . Trace right pleural effusion is likely present , and minimal atelectasis is seen in the right lung base . Previously noted leftward shift of mediastinal structures has also resolved . The cardiac , mediastinal and hilar contours are normal . Left lung is clear .
    OUTPUT:
    
Resolution of previously noted right pneumothorax and re-expansion of the right lung with minimal residual right basilar atelectasis status post right - sided chest tube placement . Trace right pleural effusion .