Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Upright portable chest radiograph demonstrates interval placement of a right pleural catheter , overlying the right lung base . There has been interval decrease in the layering right pleural effusion . The heart size is enlarged , as before . Residual atelectasis at the right lung base is again noted .
    OUTPUT:
    
Interval improvement in layering right pleural effusion status post right chest tube placement . No pneumothorax . Continued cardiomegaly .