Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs were obtained . A moderate to large right pleural effusion is slightly larger compared with ___ . The left lung is clear . There is no pneumothorax . Cardiac and mediastinal contours are normal . Destructive changes of the right ___ and ___ posterior ribs are stable .
    OUTPUT:
    
Slight increase in moderate to large right pleural effusion since ___ .