Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-upright radiograph of the chest demonstrates low lung volumes which results in bronchovascular crowding . There is bibasilar atelectasis . The cardiomediastinal and hilar contours are unchanged . No pneumothorax , pleural effusion , or consolidation . No evidence of pulmonary edema .
    OUTPUT:
    
1 . Bibasilar atelectasis . 2 . No pulmonary edema .