Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A new small caliber chest tube has been placed , terminating at the right lung apex . A right - sided pneumothorax is dramatically smaller and perhaps fully resolved , although potentially with trace lucency near the tip of the tube . The right lung is reexpanded with mild residual atelectasis of the right upper lobe . Mediastinal shift has resolved . The left lung remains clear .
    OUTPUT:
    
Essentially resolved pneumothorax with chest tube placement .