Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest demonstrating a left chest wall pacemaker generator with appropriately positioned right atrial and ventricular leads . No pneumothorax is seen . The course of the pacemaker leads is uncomplicated . The lungs are otherwise clear and the cardiac and mediastinal contours are within normal limits . No pleural abnormality is detected .
    OUTPUT:
    
Satisfactory positioning of left chest wall pacemaker generator , right atrial and ventricular leads with no pneumothorax .