Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest views were obtained with patient in upright position . Analysis is performed in direct comparison with the next preceding similar study of ___ . During the interval , the right - sided chest tube has been removed with pneumothorax remaining as it existed while the tube was in place . This can be measured up to 2 cm in the right axillary area but narrows to a few millimeters within the apical region . In comparison with the preceding study , there is no critical collapse of the right lung . No new parenchymal processes can be seen . In the left hemithorax , the previously described left - sided chest tube introduced from the lateral anterior chest wall and reaching finally the lateral posterior pleural sinus remains unchanged . There is no evidence of increased pleural effusion in comparison with the previous study , and no pneumothorax is seen on the left side . Chest wall emphysema on the left side related to the tube and since remains as before .
    OUTPUT:
    
Small stable pneumothorax in right upper lobe area remaining after chest tube removal . No progression of pulmonary collapse .