Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with the immediate prior study of 1 hr before , right base pleural effusion has further decreased and associated compressive atelectasis has improved . Pleurx catheter still can not be traced from the chest wall through its course . This is better evaluated on the concurrent abdominal radiograph , which demonstrates that the catheter is within the chest . Otherwise there is little change from radiographs obtained earlier the same day .
    OUTPUT:
    
Further decrease in size of right pleural effusion and improvement in compressive atelectasis .