Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a new dual - lead pacemaker with the leads in the expected region of the right atrium and right ventricle and the generator overlying the left upper hemithorax . There is no evidence of a pneumothorax . The lungs are clear with no evidence of consolidation or effusion . The cardiomediastinal silhouette is normal . Mild elevation of the right hemidiaphragm remains stable .
    OUTPUT:
    
Standard positioning of the pacemaker with no evidence of a pneumothorax .