Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval reaccumulation of left pleural fluid , which is similar in severity to chest radiograph from ___ , moderate . There is probable associated underlying atelectasis . The right lung and left upper lung remain clear . A left approach pacemaker and leads are unchanged in position and are intact . No pneumothorax is evident .
    OUTPUT:
    
Reaccumulation of left pleural fluid , now moderate .