Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The left - sided chest tubes are unchanged in position . There may be a tiny left apical pneumothorax , which is expected given the presence of a chest tube . Small bilateral pleural effusions , left greater than right are persistent . Increase in opacities at the lung bases bilaterally may be concerning for worsening infection . The visualized osseous structures are unremarkable .
    OUTPUT:
    
Worsening opacities at the lung bases bilaterally is concerning for worsening infection .