Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP single view of the chest has been obtained with patient in semi-upright position . Comparison is made with the next preceding similar study obtained seven hours earlier during the same day . Position of the right - sided chest tube is unaltered . Again the right - sided minimal residual pneumothorax is barely visible . Airation of lung tissue , mild elevation of right - sided diaphragm appears unchanged .
    OUTPUT:
    
Stable chest findings . Thus , no evidence of any increase of the barely detectable minimal right - sided pneumothorax .