Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest radiograph obtained . Lung volumes are low . There is no free air below the right hemidiaphragm . Bibasilar atelectasis is noted . No definite consolidation , effusion or pneumothorax . The heart is mildly enlarged and the aorta is unfolded . Bony structures are intact . Multiple surgical clips in the right upper quadrant are noted .
    OUTPUT:
    
1 . No free air below the right hemidiaphragm . 2 . Mild bibasilar atelectasis .