Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear without consolidation , effusion , or pulmonary vascular congestion . Cardiomediastinal silhouette is stable . Atherosclerotic calcifications noted at the aortic arch . Median sternotomy wires and mediastinal clips are again noted .
    OUTPUT:
    
No acute cardiopulmonary process .