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 ___ . Observed that a PA lateral chest examination was performed during this examination interval on ___ with patient in upright position . At that time , existing air-fluid levels in the pleural space could not be assessed . Again the previously described left - sided chest wall emphysema remains and makes identification of a possible remaining small pneumothorax in the left hemithorax impossible . The findings on the portable chest examinations are rather unchanged and there is a mild degree of left - sided mediastinal shift suggesting volume loss , atelectasis in the left - sided pulmonary changes . The right - sided hemithorax remains unremarkable with normal pulmonary vasculature and absence of any fluid accumulation in the right pleural sinus . No new infiltrates .
    OUTPUT:
    
Stable chest findings as seen on portable AP single view examination .