Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the prior chest radiograph performed 2 hours prior , the single lead of a left chest wall generator demonstrates mild retraction of the tip with a redundant loop , remaining within the right ventricle , new since ___ . The lungs are clear . There is no pleural effusion or pneumothorax . The cardiac and mediastinal contours are normal .
    OUTPUT:
    
Redundant pacemaker lead with retraction of the tip , still likely within the right ventricle , new since ___ . Correlate with pacemaker function .