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 . There are small areas of bibasilar atelectasis . There is a tiny left - sided pleural effusion . The cardiomediastinal and hilar contours are unremarkable . There is no pneumothorax or consolidation or pulmonary edema .
    OUTPUT:
    
Small bibasilar atelectasis and tiny left - sided pleural effusion . No pneumonia .