Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are compared to previous exam from ___ and PET - CT from ___ . The lungs are clear . Cardiomediastinal silhouette is within normal limits . Hypertrophic changes are seen in the spine and there is evidence of prior anterior right sixth rib fracture as seen on prior PET scan . Osseous and soft tissue structures are otherwise unremarkable .
    OUTPUT:
    
No acute cardiopulmonary process .