Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: An endotracheal tube tip is 3 .6 cm from the carina . A left subclavian and right internal jugular central line both end in the low SVC . There is persistent opacification of the left middle and lower lung zones . Persistent volume loss in the right upper lobe is unchanged . There is no pneumothorax or pleural effusion .
    OUTPUT:
    
1 . Endotracheal tube 3 .6 cm from the carina . 2 . Persistent opacification of the left mid and lower lung . 3 . Stable chronic volume loss in the right upper lobe .