Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post left upper lobectomy with several clips demonstrated in the left mid lung field . Linear and patchy opacities within the medial left lung base likely reflect atelectatic changes , with leftward shift of mediastinal structures and elevation of the left hemidiaphragm compatible with evidence of volume loss . The amount of subcutaneous emphysema in the left chest wall has decreased since the previous study , and the previously demonstrated small left apical pneumothorax appears to have resolved with a small amount of fluid now seen in the left pleural space . The right lung is clear . There is no right - sided pleural effusion or pneumothorax .
    OUTPUT:
    
Postsurgical changes in the left hemithorax with decreased subcutaneous emphysema in the left chest wall . Previously identified left apical pneumothorax now appears to have resolved with small amount of fluid seen in the pleural space . No definite pneumonia visualized .