Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a small right and a large left pleural effusion as well as partial left lower lobe atelectasis . No pneumothorax . The cardiac and mediastinal contours are normal .
    OUTPUT:
    
Large left pleural effusion and partial left lobe atelectasis raises concern for an empyema . Small right pleural effusion .