Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The right pigtail drain has now been removed . There is a small right pleural effusion . The heart is moderately enlarged , overall unchanged . No focal consolidation or pulmonary edema . The retrocardiac opacity is now clear , suggesting atelectasis previously . No left pleural effusion . No pneumothorax .
    OUTPUT:
    
Small right pleural effusion with removal of right pigtail drain .