Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single frontal radiograph of the chest demonstrates a newly placed left pigtail catheter which crosses the left lung transversely . There has been interval improvement in the left - sided pneumothorax with residual apical pneumothorax still seen . There is partial reinflation of the left lower lobe compared to the prior radiograph . There is unchanged appearance of the right lung with still small extrapleural hematoma as well as mild right - sided pleural effusion .
    OUTPUT:
    
Interval placement of left - sided pigtail catheter which overlies the left lung parenchyma . Interval improvement of left - sided pneumothorax .