Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs : The lungs are of lower volume than on the prior study . Bilateral parenchymal disease persists . It is difficult from 8 indeterminate this as advanced is the left base the prior examination with the difference in inspiratory volume . Pleura : There is no pleural effusion . Mediastinum : No mediastinal mass is seen on this AP examination . Heart : The heart is not enlarged . Osseous structures : The osseous structures are normal for age . Additional findings : None .
    OUTPUT:
    
Continued bilateral parenchymal lung disease . The left base in has more density than on the prior , but the degree of inspiration is less on the current and this may be responsible for the difference in appearance .