Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable supine view of the chest . Underlying trauma board is noted . There has been placement of a left pigtail chest tube with its tip projecting over the left mid lung peripherally . There is opacity abutting the tip of the chest tube which could represent a focal area of atelectasis . There is no supine evidence for pneumothorax or large effusion . Cardiomediastinal silhouette appears normal . Numerous left rib fractures are better assessed on same - day CT chest .
    OUTPUT:
    
Interval placement of left pigtail chest tube . No residual pneumothorax identified on this supine radiograph .