Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest were provided . Midline sternotomy wires and mediastinal clips are again noted . There is a right chest wall pacer device with lead tips extending to the expected level of the right atrium and right ventricle . The lungs appear clear bilaterally with no evidence of focal consolidation , effusion , pneumothorax , or pulmonary edema . Cardiomediastinal silhouette is normal . Bony structures appear intact . Degenerative spurring is seen within the thoracic spine . No free air is seen below the right hemidiaphragm .
    OUTPUT:
    
No acute intrathoracic process .