Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal contours are stable with mild cardiomegaly . Pacer leads are in standard position in the right atrium and right ventricle . There is no evidence of pulmonary edema . . There is no pneumothorax . If any there are small bilateral effusions . There are minimal bibasilar atelectasis . There are mild degenerative changes in the thoracic spine .
    OUTPUT:
    
Cardiomegaly . No pulmonary edema . Pacer leads in standard position