Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are hyperexpanded , compatible with COPD and emphysema . There is no pleural effusion , pneumothorax or focal airspace consolidation worrisome for pneumonia . The previously described right lung base opacity has resolved from ___ . Increased lucency of the right lower lung zone is unchanged . The heart is normal size . There is no pulmonary edema . The mediastinal and hilar contours are unremarkable . Old bilateral rib fractures are noted .
    OUTPUT:
    
COPD / emphysema without a superimposed acute process .