Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the prior radiograph , no change in the lead positioning . One lead projects over the right atrium , the other over the right ventricle , and the other in the coronary sinus . Lung volumes have decreased but there is no pneumothorax . Moderate cardiomegaly is stable . Bibasilar atelectasis is noted .
    OUTPUT:
    
1 . Continuous pacemaker leads terminate in the right atrium , right ventricle , and coronary sinus . 2 . No pneumothorax .