Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . The lungs are clear without consolidation , effusion , or pulmonary vascular congestion . Cardiomediastinal silhouette is within normal limits . Post-operative changes of CABG are noted with median sternotomy wires , mediastinal clips and mitral valve repair . No acute osseous abnormality is identified .
    OUTPUT:
    
No acute cardiopulmonary process .