Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to prior , the lung volumes have increased with minimal atelectasis at the right base . Otherwise , the lungs are clear . There is small pleural effusion at the right base . No pleural effusion is seen on the left . The heart size is normal . The mediastinal and hilar contours are normal . No pneumothorax is seen .
    OUTPUT:
    
Improved lung volumes with minimal right pleural effusion .