Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiograph demonstrates a increased opacification within the right mid and lower lung zone . Streaky opacities at the left lung base is likely secondary to atelectasis . Relative to prior examination dated ___ , cardiomediastinal and hilar contours are stable . Patient is status post median sternotomy , wires which appear intact . Patient has known severe upper lobe predominant centrilobular emphysema . Architectural distortion and bilateral pleural thickening is not significantly change relative to prior examination . A granuloma within the left upper lobe is stable . There is no pleural effusion , pneumothorax , or evidence of pulmonary edema . A healed right clavicular fracture is unchanged .
    OUTPUT:
    
Relative to prior examination , airspace opacification of the right mid and lower lobes is more conspicuous for which an infectious process is difficult to exclude . Some fibrotic changes with architectural distortion and bilateral pleural thickening is stable in appearance relative to prior examination .