Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size , mediastinal , and hilar contours are stable . Patient is status post right upper lobectomy with multiple surgical clips , right lung volume loss , and unchanged loculated right apical fluid . Notably , substantial left lower lobe volume loss may be secondary to a mucous plug , with a small overlying pleural effusion . No focal consolidation concerning for pneumonia or pneumothorax .
    OUTPUT:
    
1 . Left lower lobe volume loss is new and may be due to a mucus plug . Total collapse may not be seen if prior scarring is present . Likely small overlying pleural effusion . 2 . No evidence of increasing pulmonary edema .