Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared with the most recent prior radiograph dated ___ , there has been no significant interval change . Redemonstrated is a stable , large , left posterior pleural loculated collection . The lungs themselves are clear and without focal consolidation . There is no pneumothorax or overt pulmonary edema identified . The heart size is normal . Mediastinal contours are normal .
    OUTPUT:
    
Stable , large , left posterior pleural loculated collection .