Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The moderate left pleural effusion has increased compared to ___ . There is no right - sided pleural effusion . There is no focal consolidation pneumothorax , or pulmonary edema . The cardiomediastinal silhouette is within normal limits . Patient is status post median sternotomy and partial right 6 rib resection .
    OUTPUT:
    
Moderate left pleural effusion has increased since ___ .