Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with the immediate prior study moderate bibasilar layering pleural effusions have substantially increased . A superimposed infectious process at the left lung base is possible in the proper clinical setting . There is mild edema . No pneumothorax . A tunneled right IJ central venous catheter tip terminates in the right atrium . A left pectoral single - chamber pacemaker lead projects in unchanged location .
    OUTPUT:
    
1 . Substantial interval increase in moderate bibasilar layering pleural effusions and mild edema . 2 . Superimposed infectious process in the left lung base is possible in the proper clinical setting .