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 . Analysis is performed in direct comparison to the next preceding similar study obtained on ___ . Very small right apical pneumothorax persists but has not increased in comparison with the previous study . Hazy density on the right base with mild blunting of the right lateral pleural sinus is now seen . The on previous examination suspected parenchymal infiltrate more medially on the right base has not progressed further . No other new abnormalities are present .
    OUTPUT:
    
Stable chest findings . No new infiltrates , minimal right apical pneumothorax has not increased .