Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: An endotracheal tube ends 4 cm above the carina . An upper enteric tube ends in the stomach . The lungs are clear without focal opacity , pleural effusion or pneumothorax . The cardiac and mediastinal contours are normal .
    OUTPUT:
    
The endotracheal tube ends 4 cm above the carina .