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 . The cardiomediastinal and hilar contours are unremarkable . There is no pneumothorax , pleural effusion , or consolidation . No free air is seen beneath the right hemidiaphragm on this portable , semi-upright radiograph .
    OUTPUT:
    
No free air is seen beneath the right hemidiaphragm on this portable , semi-upright radiograph .