Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lower lung volumes seen on the current exam . The lungs are clear without focal consolidation , effusion , or edema . Cardiomediastinal silhouette is within normal limits . Median sternotomy wires and mediastinal clips are noted . No acute osseous abnormalities , no displaced fractures identified .
    OUTPUT:
    
No acute cardiopulmonary process .