Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The tiny volume of residual air in the left pleural space laterally and anteriorly , in the small , stable volume of loculated left pleural fluid or pleural thickening , reflects recent removal of the left thoracostomy tube . The left hemidiaphragm is more elevated now than it was several days ago , an indication of greater volume loss in the left lower lobe . The right lung and pleural space and visible mediastinal contours and structures are normal .
    OUTPUT:
    
1 . Small amount of thoracostomy related air and residual pleural fluid loculation , unchanged . 2 . Mild volume loss at the left lower lobe .