Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: An endotracheal tube terminates approximately 5 cm above the carina . A enteric tube terminates below the level of the diaphragm . Overall lung volumes are low . Bibasilar opacities may represent atelectasis or aspiration . There is no pneumothorax or pleural effusion . Heart size is normal .
    OUTPUT:
    
1 . Endotracheal tube is appropriately positioned , terminating approximately 5 cm above the carina . 2 . Bibasilar opacities may represent atelectasis or aspiration .