Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are free of focal consolidations , pleural effusions or pneumothorax . Mild left retrocardiac atelectasis . Cardiomediastinal silhouette is within normal limits . Atherosclerotic calcifications are noted in the aortic arch . Multiple surgical clips are visualized in the right upper quadrant . Of note , the endotracheal tube is at the carina , and appears to be entering the right mainstem bronchus .
    OUTPUT:
    
1 . No evidence of pneumonia . 2 . ETT is at the carina and appears to be entering the right mainstem bronchus . If patient is still intubated , it should be pulled back by 4 - 5 cm .