Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP single view of the chest has been obtained with patient in sitting semi-upright position . Analysis is performed in direct comparison with the next preceding similar study of ___ . The portable AP single view chest examinations are compared and no significant difference can be identified . Thus , there remains extensive right - sided chest wall emphysema , two right - sided pleural drainage tubes unchanged in position , no new acute infiltrates , scattered patchy basal infiltrates are unchanged .
    OUTPUT:
    
Stable chest findings .