Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperexpanded consistent with advanced emphysema . There is slight assymetry of the hemithoraces , smaller on the right , unchanged compared with ___ . The heart is not enlarged . The hilar and mediastinal contours are probably unchanged . There is a subtle increase in patchy opacification along the upper right lung compared to the prior exam . Opacity at the right base and midzone is improved . There is no frank consolidation and there is no pleural effusion or pneumothorax . No CHF . The visualized osseous structures are grossly unremarkable . Tubing noted in the left upper quadrant , ? G-tube .
    OUTPUT:
    
Subtle increase in opacity overlying the upper right lung is concerning for pneumonia .