Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison to the prior study , the right lower lobe opacities have actually improved . Minimal left lower lobe opacities remain , probably consistent with atelectasis versus aspiration . Cardiac size is stable and normal . Aorta is slightly unfolded . Hilar contours are normal . No pleural effusion and no evidence of pneumonia . Hyperinflation corresponds to emphysema .
    OUTPUT:
    
Compared to seven days prior , little change in the left lower lobe opacities , perhaps representing atelectasis versus aspiration . Improving right lower lobe opacities .