Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are hyperinflated . Extensive bilateral opacities are similar to ___ . This limits evaluation for superimposed infection , however , there is an increase in opacification in the right upper lobe and superior segment of the left lower lobe from ___ . No pleural effusion or pneumothorax . Heart is normal size . No pulmonary edema . Mediastinal and hilar contours are unremarkable . Healed right rib fractures are again noted .
    OUTPUT:
    
Increase in opacity in the right upper lobe and superior segment of the left lower lobe from ___ are concerning for pneumonia superimposed on chronic lung disease .