Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: 2 portable AP views of the chest . The lungs are hyperinflated as on prior with coarse interstitial markings suggestive of chronic underlying lung disease . More focal opacities projecting over the left lung are compatible with callus formation from interval , healing rib fractures involving the posterior left ___ ___ and 9th ribs . The cardiomediastinal silhouette is within normal limits . No definite acute osseous abnormality .
    OUTPUT:
    
No definite acute cardiopulmonary process .