Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable upright frontal image of the chest . There has been interval placement of a left - sided pigtail chest tube . With partial re-expansion of the lung . Increased opacity in the left lower lung and to a lesser extent the left upper lung may represent re-expansion edema . No pleural reflection is clearly seen , suggesting significant re-expansion . The cardiac silhouette is normal in size .
    OUTPUT:
    
Interval placement of left - sided pigtail chest tube with significant interval re-expansion of the left lung . Areas of opacity in the left lung may reflect re-expansion pulmonary edema or atelectasis .