Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Comparisons to the prior study , there has been a significant increase in the left upper lobe opacities as well as continued persistence of the left lower lobe opacities and total left lung haziness superimposed on severe emphysema . Patient 's right sided masses are more obscured on today 's film due to rotation . There continues to be right sided pleural effusion .
    OUTPUT:
    
New left lobe opacity concerning for pneumonia versus advancing disease superimposed on multiple known previous masses .