Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The endotracheal tube terminates 6 cm above the carina . Left pectoral pacer is visualized , with 1 lead terminating in the right ventricle but tip of the second lead is not visualized on this study . Lung volumes are low . There is opacification of the left lung base which is likely due to atelectasis . There is no pneumothorax . Cardiomediastinal silhouette is unremarkable . Atherosclerotic calcification is noted in the aortic arch . Left shoulder prosthesis is visualized .
    OUTPUT:
    
Endotracheal tube terminates 6 cm above the carina .