Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Increased interstitial markings seen at the periphery of the lung , right greater than left compatible with previously noted subpleural fibrotic changes . There is no new focal consolidation , effusion , or edema . Cardiomediastinal silhouette is stable . No acute osseous abnormalities .
    OUTPUT:
    
Chronic changes in the lungs without superimposed acute cardiopulmonary process .