Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Previously reported small nodular opacity adjacent to the right second anterior rib is no longer visualized . Lungs remain markedly hyperexpanded , in keeping with emphysema , but there are no focal areas of consolidation or substantial atelectasis present . Heart size , mediastinal and hilar contours are within normal limits and without change .
    OUTPUT:
    
1 . Resolution of small right upper lobe nodular opacity , which was likely infectious or inflammatory in etiology . 2 . Hyperinflated lungs , likely due to severe emphysema .