Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate right pleural effusion with overlying atelectasis is re - demonstrated . It is difficult to exclude a right base consolidation . No focal consolidation or pleural effusion is seen on the left . There is no pneumothorax . The cardiac silhouette remains enlarged . Mediastinal contours are stable .
    OUTPUT:
    
Moderate right pleural effusion with overlying atelectasis , similar in appearance compared the prior study . Right base opacity may be due to combination of pleural effusion and atelectasis , but underlying consolidation is not excluded . Persistent enlargement of the cardiac silhouette .