Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided pleural effusion has increased , now moderate in size . Persistent trace right pleural effusion . Adjacent atelectasis noted at the left lung base . Elsewhere , lungs are clear . The cardiomediastinal silhouette is within normal limits . Median sternotomy wires are intact .
    OUTPUT:
    
Interval increase in size of left pleural effusion .