Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: An endotracheal tube ends approximately at the carina . A nasoenteric tube is seen coiling within the stomach with the tip adjacent to the GE junction . Cardiomediastinal silhouette is notable for calcifications of the aortic knob . The lungs are grossly clear . There is no pneumothorax or pleural effusion . There is an S - shaped curvature of the thoracolumbar spine .
    OUTPUT:
    
Endotracheal tube at the carina , can be withdrawn for more optimal positioning .