Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low causing minimal atelectasis at the bases , otherwise there are no opacities concerning for an infectious process . Patient is status post median sternotomy wire . Pacemaker is seen with leads in appropriate position . No pneumothoraces or pleural effusions are seen . Cardiomediastinal silhouette and hilar contours are unremarkable with the exception of ___ from the patient 's prior CABG .
    OUTPUT:
    
No acute cardiopulmonary process .