Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well - expanded and clear . The cardiomediastinal silhouette is stable . Median sternotomy wires and post CABG changes are again noted . A left lateral rib deformity is well healed . The pleural and hilar surfaces are unremarkable .
    OUTPUT:
    
No acute cardiopulmonary process .