Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are slightly low with bibasilar atelectasis and bronchovascular congestion . Mild blunting of the left costophrenic angle is atelectasis better seen on the CT . No frank edema or pleural effusion . No pneumothorax . The heart is normal in size . The mediastinum is not widened . Dextroconvex scoliosis of the thoracic spine with mild associated distortion of the chest cage is mild . Degenerative changes in the thoracic spine are mild .
    OUTPUT:
    
Low lung volumes with bibasilar atelectasis .