Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The tip of a left chest wall Port - A - Cath extends to the right atrium . The pleural effusions are likely minimally increased in size with increased atelectasis at both lung bases . No pneumothorax is identified . The size and appearance of the cardiomediastinal silhouette are unchanged .
    OUTPUT:
    
Mild worsening of the pleural effusions bilaterally with overlying atelectasis . Superimposed infection can not be excluded .