Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are mildly hyperinflated , as seen previously . No focal consolidation , pleural effusion , pneumothorax , or pulmonary edema is detected . Linear density projecting over the right mid lung field appears unchanged and likely represents scarring or atelectasis in the right middle lobe . Heart and mediastinal contours are within normal limits .
    OUTPUT:
    
Hyperinflated lungs without radiographic evidence for acute change .