Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with the most recent prior radiograph , the cardiac silhouette has decreased in size ; although it remains moderately enlarged . Mediastinal contours are unchanged . No focal consolidation , pleural effusion , or pneumothorax is present .
    OUTPUT:
    
Interval decrease in size of cardiac silhouette after drainage of pericardial effusion . No pneumothorax .