Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison to the recent chest radiograph performed yesterday afternoon , the right pleural effusion continues to improve . Compressive atelectasis is noted at the right lung base . There are no other significant interval changes . Bilateral pigtail catheters are unchanged in position . No evidence of pneumothorax . Cardiomediastinal silhouette is within normal limits .
    OUTPUT:
    
Continued improvement of right pleural effusion . No evidence of pneumothorax with pigtail catheter on waterseal .