Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable upright radiograph the chest demonstrates low volumes with resulting bronchovascular crowding . There is a small left pleural effusion and tiny right pleural effusion . At the right lung base there is persistent atelectasis . The cardiomediastinal contours are unchanged . There is no pneumothorax or pulmonary edema .
    OUTPUT:
    
No pneumothorax or pulmonary edema .