Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes are present . This causes accentuation of the cardiac silhouette size which is likely moderately enlarged . The aorta is unfolded . Apparent widening of the superior mediastinum is likely exaggerated by AP technique and low lung volumes . There is crowding of the bronchovascular structures . Patchy opacities in the lung bases likely reflect atelectasis . No pleural effusion or pneumothorax is identified . Marked degenerative changes of the right glenohumeral joint are incompletely imaged . Thoracolumbar scoliosis is again noted .
    OUTPUT:
    
Low lung volumes with bibasilar atelectasis .