Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiograph demonstrates persistent complete opacification of the left hemi thorax in a patient who is status post left pneumonectomy with associated postsurgical changes along the left chest wall , unchanged from previous examinations . Volume loss is again noted . Right lung is clear without focal opacity . Unable to assess cardiac silhouette due to shift in to left hemi thorax and overlying left hemi thorax opacity . Limited assessment of the upper abdomen is unremarkable .
    OUTPUT:
    
1 . Status post left pneumonectomy with stable postsurgical changes . 2 . No evidence of pneumonia within the right lung . Limited assessment of the left lung due to chronic complete opacification .