Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left dual lead pacemaker is present with tips terminating in the right atrium and right ventricle as expected . Heart size is top normal . Mediastinal and hilar contours are within normal limits . There is no pleural effusion or pneumothorax . Lungs are well - expanded without focal consolidation concerning for pneumonia . Mild bibasilar atelectasis is present . Pulmonary vasculature is within normal limits . The upper abdomen is unremarkable .
    OUTPUT:
    
Mild bibasilar atelectasis . No pneumonia .