Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear . There has been removal of the left chest tube . The left apical pneumothorax is mildly improved . The left pleural effusion is mildly improved . There has been interval improvement of the left chest wall subcutaneous emphysema . The cardiomediastinal and hilar contours are normal . Median sternotomy wires are intact .
    OUTPUT:
    
Slight improvement of left apical pneumothorax and left pleural effusion .