Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral radiographs of the chest demonstrate a newly placed left chest wall pacemaker with the leads terminating in the right ventricle and coronary sinus . Compared to the prior radiograph , there has been interval resolution of a right lower lobe pneumonia . The lung volumes are slightly decreased compared to the prior radiograph , and there is mild bibasilar atelectasis . The heart , mediastinal and hilar contours are normal . No pleural abnormality is detected .
    OUTPUT:
    
Interval placement of left chest wall pacemaker with leads in the right ventricle and coronary sinus .