Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low , with persistent elevation of the right hemidiaphragm . Allowing for differences in lung aeration , findings of chronic interstitial lung disease appear unchanged from the prior examination . The left lung is involved right greater degree than the right . The upper lungs are clear bilaterally . There is no pleural effusion , pneumothorax , or pulmonary edema . The cardiomediastinal silhouette is unchanged in appearance . Right hemidiaphragm remains elevated .
    OUTPUT:
    
Essentially unchanged findings of chronic interstitial lung disease , involving the left lung to a greater degree than the right . .