Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval slight repositioning of the left anterior chest wall implanted dual lead pacer with leads appearing to terminate in appropriate position in the right atrium and right ventricle . The cardiac silhouette is mildly enlarged , unchanged from prior study . Mediastinal silhouette and hilar contours are unremarkable . Lungs are clear . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Appropriate positioning of left - sided dual pacer leads without complication .