Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the prior exam , there is increased interstitial abnormality concerning for edema . More consolidative opacity is seen in the right lung . The lungs are hyperinflated , consistent with known emphysema . Heart and mediastinal contours are within normal limits . Sternal wires are noted .
    OUTPUT:
    
Increased interstitial abnormality diffusely , which could be secondary to edema . Concomitant right parenchymal opacity , which could represent pneumonia . Underlying COPD and fibrosis .