Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with prior radiographs on ___ , there is no significant change in air fluid levels in the left hemithorax , suggesting previous apparent increase in air fluid levels on radiographs on ___ was secondary to patient positioning versus a bronchopleural fistula . There is continued near opacification of the entire left hemithorax status post left pneumonectomy . There is slight decrease in subcutaneous air in the left 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 at the cavoatrial junction .
    OUTPUT:
    
No significant change in gas component in the left hemithorax , indicating the apparent increase in air - fluid levels in the left hemithorax on radiographs on ___ was secondary to patient positioning rather than a bronchopleural fistula .