Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest provided . Midline sternotomy wires and mediastinal clips are again noted . The lungs are clear without focal consolidation , effusion or pneumothorax . Cardiomediastinal silhouette is unchanged . Bony structures are intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
No acute intrathoracic process .