Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are diffusely increased interstitial markings throughout the lungs . This is likely due to underlying fibrotic changes as seen on remote prior chest CT . There is no confluent consolidation or effusion . The cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities .
    OUTPUT:
    
Diffuse chronic interstitial markings in the lungs without superimposed acute cardiopulmonary process .