Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval placement of a left pigtail pleural catheter . A small left apical pneumothorax is noted . The right lung appears unchanged since 3 hours ago . The left pacemaker positioning is unchanged .
    OUTPUT:
    
1 . Interval placement of a left pigtail pleural catheter with new small left apical pneumothorax .