Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are provided . Lung volumes are low . Bronchovascular crowding likely accounts for the lower lung opacity . No definite sign of pneumonia or overt CHF . Heart and mediastinal contours are stable . No pneumothorax . Bony structures are intact .
    OUTPUT:
    
Limited , negative .