Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable supine chest radiograph demonstrates superior migration of the endotracheal tube which is now located at least 6 .3 cm from the level of the carina , with the change in position likely the result of the change in neck extension . An NG tube is in place , it s tip is not seen below the inferior margin of the film . An esophageal temperature probe is in place . A right subclavian central venous catheter tip is located at the cavoatrial junction . The lungs are clear , with somewhat low lung volumes . There is no pleural effusion or pneumothorax . The cardiac silhouette and mediastinal contours are unchanged .
    OUTPUT:
    
1 . ETT tube now at least 6 .3 cm from the carina , suggest advancement for more optimal positioning . 2 . No acute chest abnormality .