Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: 2 views were obtained of the chest . Previously seen right middle and lower lobe opacities are improved from the previous examination . Additional left lower lobe opacities are largely unchanged . The heart and mediastinal contours are similar to the prior . There is no pneumothorax or effusion .
    OUTPUT:
    
Right middle and lower lobe opacities have improved from ___ , with unchanged left lower lobe opacity .