Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi upright radiograph of the chest demonstrates low lung volumes with resulting bronchovascular crowding . These low lung volumes accentuate the cardiac silhouette . There are small bilateral pleural effusions with adjacent atelectasis . There has been interval removal of the left - sided chest tube . There is no definite pneumothorax . Subcutaneous emphysema has not changed significantly over the interval . A right - sided internal jugular central venous line with the mid SVC .
    OUTPUT:
    
No definite pneumothorax .