Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . The study is somewhat limited by patient 's lordotic position and low lung volumes . A vagal stimulator projects over the left hemithorax with a catheter extending to the neck . There is no focal consolidation , pleural effusion , or pneumothorax . Mild bibasilar atelectasis is noted . The cardiac silhouette is mildly enlarged , unchanged . Mediastinal silhouette and hilar contours are normal allowing for low volumes .
    OUTPUT:
    
Limited study . Mild bibasilar atelectasis . No acute cardiopulmonary process .