Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with prior radiographs on ___ , there is continued almost complete opacification of the left hemithorax status post left pneumonectomy , with an apparent increase in air fluid levels in the left hemithorax , although the amount of air appears similar to CT chest on ___ , suggesting this apparent increase is due to patient positioning differences versus a bronchial stump leak . There is residual subcutaneous air in the left neck and chest wall . The right lung is clear without focal consolidation , pleural effusion or pneumothorax . The cardiac and mediastinal silhouettes are difficult to assess given pneumonectomy . A right - sided Port - A - Cath terminates in the proximal right atrium .
    OUTPUT:
    
Apparent increase in air - fluid levels in the left hemithorax may be related to differences in patient positioning . Short - term followup fully upright chest radiograph is suggested to exclude true increase in gas component which would be concerning for postoperative bronchopleural fistula .