Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Again , there is volume loss of the left lung . Left perihilar opacity appears slightly decreased as compared to the prior study . There is persistent left pleural fluid . The right lung is clear . Cardiac and mediastinal silhouettes are stable . No pneumothorax is seen .
    OUTPUT:
    
Again , there is volume loss of the left lung . Left perihilar opacity appears slightly decreased as compared to the prior study . There is persistent left pleural fluid . The right lung is clear . Cardiac and mediastinal silhouettes are stable . No pneumothorax is seen .