Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No central line is seen . No ptx is detected on either side . An ET and NG tube are again noted . The cardiomediastinal silhouette is enlarged . There is mild vascular plethora , but no overt CHF . A small right pleural effusion may be present . Minimal atelectasis and / or scarring noted at the bases .
    OUTPUT:
    
No pneumothorax detected .