Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are scattered bilateral interstitial opacities in both lungs , none of which appear new since prior . Previously seen left upper lung opacity has resolved . There is no new focal consolidation or effusion . The cardiomediastinal silhouette is stable with mild cardiomegaly . Pulmonary artery enlargement and aortic arch calcifications again noted . No acute osseous abnormalities detected .
    OUTPUT:
    
Chronic changes without evidence of acute cardiopulmonary process .