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 ___ . The lungs remain clear of confluent consolidation or pleural effusion . Cardiomediastinal silhouette is stable . Again seen are multiple old posterior right rib fractures . Hypertrophic change is also seen in the spine . Osseous and soft tissue structures are otherwise unchanged .
    OUTPUT:
    
No acute cardiopulmonary process .