Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Postsurgical left lung volume loss is present . There is persistent elevation of the left hemidiaphragm . Surgical clips within the left lower lung zone are unchanged in position . There is no pneumothorax . The right lung remains clear . Central pulmonary vessels are normal in caliber . No focal consolidation is seen .
    OUTPUT:
    
Unchanged post-surgical left lung volume loss . No superimposed acute process seen .