Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate a left chest wall pacing device , with the leads overlying the right ventricle and atrium , unchanged in position . The cardiomediastinal silhouette remains normal . The lungs are there is well aerated , without focal consolidation , pleural effusion , or pneumothorax . There is mild bibasilar atelectasis , right greater the left . Again seen is calcification of the aortic knob . The visualized upper abdomen is unremarkable .
    OUTPUT:
    
No acute cardiopulmonary process .