Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable radiograph is provided . The ET tube is approximately 4 .1 cm from the carina . NG tube courses below the diaphragm . There is opacity at the right lung base , which likely represents atelectasis or pneumonia . There is no pneumothorax or pleural effusion . The cardiomediastinal silhouette is normal . The osseous structures are intact .
    OUTPUT:
    
1 . Appropriate position of NG tube and ET tube . 2 . Opacity at right base may be aspiration or pneumonia .