Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Bilateral parenchymal scarring is again identified , most extensive in the right mid lung where there are adjacent chain sutures . There is no new confluent consolidation nor effusion . The cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities identified .
    OUTPUT:
    
Chronic changes in the lungs without superimposed acute cardiopulmonary process .