Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval resolution of the previously seen perihilar and basilar ground - glass and reticular opacities . Again seen are small bilateral pleural effusions . There is no pneumothorax . No new focal consolidation is seen . The lung volumes are increased , in keeping with the history of COPD . The heart size is normal . The hilar and mediastinal contours are unchanged . The visualized osseous structures are unremarkable .
    OUTPUT:
    
Interval resolution of patient 's pneumonia .