Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a small right pleural effusion which has decreased in size from ___ study along with interval removal of pigtail pleural drainage catheter . The left lung is clear . The heart is top - normal in size stable from previous studies . The mediastinal silhouette and hilar contours are normal .
    OUTPUT:
    
Interval decrease in small right pleural effusion .