Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single PA upright portable view of the chest was obtained . In the interval since the prior study , there has been placement of a left - sided chest tube , terminating in the medial left lower hemithorax , with significant decrease in left pneumothorax with possibly a tiny left apical pneumothorax remaining . The lungs remain hyperinflated . There is left base retrocardiac streaky opacity . This may represent atelectasis . Cardiac and mediastinal silhouettes are stable . Multiple old left - sided rib deformities are again noted . Surgical clips overlie the lateral right lower hemithorax .
    OUTPUT:
    
Interval placement of left - sided chest tube with significant decrease in left - sided pneumothorax with possible only tiny residual left apical pneumothorax remaining . Increased patchy left base retrocardiac opacity may be due to atelectasis .