Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right - sided pacemaker is again seen with leads terminating in the right atrium and right ventricle . Left - sided PICC terminates in the lower SVC . The cardiomediastinal and hilar contours are normal . Lung volumes have improved bilaterally . Thin , linear band in the lateral right lung likely reflects subsegmental atelectasis .
    OUTPUT:
    
Appropriately positioned right - sided pacemaker .