Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral chest radiographs were provided . Lungs are well expanded . There is no focal consolidation , pleural effusion or pneumothorax . A left chest wall pacemaker is seen with leads within the right atrium and right ventricle . The cardiomediastinal silhouette is notable for calcified aortic arch . There are no displaced rib fractures . The imaged upper abdomen is unremarkable .
    OUTPUT:
    
No acute cardiopulmonary process or displaced rib fractures .