Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are persistent coarse reticular bibasilar opacities which given differences in inspiratory effort are unchanged . Known pulmonary nodules seen on prior CT are not clearly delineated . There is no confluent consolidation or effusion . Cardiomediastinal silhouette is stable . Tortuosity of the descending thoracic aorta is again noted . Old healed left lateral rib fractures are noted . There is no acute osseous abnormality .
    OUTPUT:
    
Chronic changes as above without superimposed acute cardiopulmonary process .