Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Interval placement of an endotracheal tube that terminates 4 .8 cm above the carina . There are low lung volumes . Opacification of the lung fields are likely due to low lung volumes and patient body habitus . The cardiac silhouette is enlarged . There is no pneumothorax or pleural effusion .
    OUTPUT:
    
Interval placement of endotracheal tube terminating 4 .8 cm above the carina .