Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . This accentuates the size of the cardiac silhouette which is top normal . The mediastinal contour is likely within normal limits . There is crowding of the bronchovascular structures but no pulmonary edema is demonstrated . Streaky opacities in the lung bases likely reflect atelectasis . Infection can not be completely excluded . No pleural effusion or pneumothorax is present . Single ___ rod is seen within the thoracolumbar spine which demonstrates a moderate S - shaped scoliosis .
    OUTPUT:
    
Low lung volumes with patchy bibasilar opacities , likely atelectasis . Please note that infection however is not completely excluded .