Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Again seen is a left - sided pigtail catheter . Overall positioning is unchanged from prior study . No pneumothorax is detected . There is a left apical pneumothorax which is minimal and unchanged from prior study . There is a small left effusion . There are persistent consolidations at the lung bases bilaterally which most likely represent atelectasis and is unchanged from prior study . Left mid clavicular fracture is again noted , unchanged in alignment .
    OUTPUT:
    
1 . Minimal left apical pneumothorax , unchanged from chest xray ___ . 2 . Unchanged bilateral basilar opacities most likely due to atelectasis . This is unchanged from chest xray ___ . 3 . Left mid clavicular fracture is again noted .