Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The ET tube , NG tube , left subclavian lines are unchanged . There is dense retrocardiac opacity that is increased compared to the study from the prior day and is a combination of volume loss and infiltrate . There continues to be right lower lobe volume loss / infiltrate as well .
    OUTPUT:
    
Slightly worse appearance to the left lower lobe