Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear , without focal consolidation to suggest pneumonia . There is no pneumothorax or pleural effusion . Heart size is top normal but unchanged from prior studies . Calcifications are seen within the aortic arch . The mediastinal silhouette is stable . A left - sided pacemaker is present with wires terminating in the right atrium and right ventricle . Metallic density projecting over the right hemithorax is thought to be external . Median sternotomy wires and surgical clips are again seen .
    OUTPUT:
    
No evidence of acute cardiopulmonary process .