Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The tip of the endotracheal tube is unchanged since the prior chest x-ray and remains satisfactory . Position of the nasogastric tube is also unaltered . The right lung is clear . Atelectasis and opacifications are again noted in the left lobe improved , particularly in the upper lobes since the prior chest x-ray of ___ .
    OUTPUT:
    
Some clearing of the left upper lobe opacifications .