Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left pectoral pacemaker has its 2 leads terminating in right atrium and right ventricle . There is no pneumothorax or pleural effusion . Mildly enlarged cardiomediastinal silhouette is unchanged . Mild pulmonary vessel congestion is similar to prior .
    OUTPUT:
    
Left pectoral pacemaker has its 2 leads terminating in right atrium and right ventricle . No pneumothorax .