Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are stable . There has been interval increase in the right pleural effusion with a rounded contour concerning for loculation . There is no left pleural effusion . There is no pneumothorax . There is no focal consolidation concerning for pneumonia . Pulmonary vasculature is within normal limits .
    OUTPUT:
    
Enlarged left pleural effusion , now possibly loculated .