Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with the prior radiograph , no change in the right HD catheter in the right atrium , NG tube , and left chest tube . Bilateral parenchymal opacities and small effusions are unchanged . No evidence of pneumothorax .
    OUTPUT:
    
1 . Persistent small bilateral effusions are unchanged . 2 . No pneumothorax .