Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The degree of left apical pneumothorax is unchanged since 1 day prior , as is the air fluid level at the left lung base . There are persistent small bilateral pleural effusions with adjacent atelectasis . The lungs are otherwise clear and the cardiac , hilar , and mediastinal contours are normal .
    OUTPUT:
    
Unchanged left pneumothorax . Small bilateral pleural effusions .