Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: 2 views were obtained of the chest . The lungs are lower in volume than the prior study giving the appearance of bronchovascular crowding . Linear opacities in the right mid lung and left lower lung are consistent with known scarring / fibrosis . Cardiac and mediastinal contours are unchanged . No pneumothorax or pleural effusion is identified .
    OUTPUT:
    
Low lung volumes without acute intrathoracic process .