Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The chest radiograph dated ___ shows a slight change in the position of the left apical chest tube , which now terminates at the superior border of the left clavicle . The right subclavian central venous line is unchanged , terminating in low SVC . The slightly bent appearance of the line where it enters the chest wall is unchanged . Aeration of the left lung has substantially improved with re-expansion of the lung and resultant rightward shift of the heart and mediastinum . The right lung remains clear . There is a small residual left pneumothorax . Metallic foreign bodies are again noted . The followup radiograph dated ___ shows increased left lung atelectasis , and a persistent moderate left pneumothorax . There is no other significant interval change .
    OUTPUT:
    
Initial re-expansion of the left lung with associated left lung atelectasis improved on the ___ radiograph , but worsened on the initial ___ radiograph . There is still substantial left lung atelectasis and a moderate size left pneumothorax .