Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Again a left - sided Port - A - Cath terminates in the right atrium . Mild cardiomegaly is stable compared to exams dated back to ___ . Low lung volumes exaggerate the hilar and mediastinal contours , which are otherwise unremarkable . There has been interval increase in small bilateral pleural effusions as well as mild bibasilar opacities . There is no pulmonary edema . No pleural effusion or pneumothorax is identified .
    OUTPUT:
    
Interval increase in small bilateral pleural effusions as well as mild bibasilar atelectasis . A superimposed infectious process can not be excluded .