Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval placement of a left - sided pacer and dual leads . The right ventricular lead overlies the left hemidiaphragm on this single view . The heart is moderately enlarged with stable in size from the prior exam . The cardiomediastinal and hilar contours are within normal limits . There is no focal consolidation , effusion or pneumothorax . No evidence of pulmonary edema with minimal pulmonary vascular engorgement .
    OUTPUT:
    
No evidence of pneumothorax . Pacer and leads leads in expected position .