Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear stable . Lung volumes are low . There is no pleural effusion or pneumothorax . Moderate interstitial changes associated with known interstitial lung disease appear not significantly . There is no definite superimposed process .
    OUTPUT:
    
Stable findings associated with moderately severe interstitial disease .