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 likely moderately enlarged . Mediastinal contours are similar , with tortuosity of the thoracic aorta again noted , and widening of the superior mediastinum , likely due to low lung volumes , with rightward deviation of the trachea . There is crowding of the bronchovascular structures with mild pulmonary vascular congestion . Chronic elevation of the left hemidiaphragm is again noted . Left basilar opacity could reflect atelectasis . There is no pleural effusion or pneumothorax . Extensive glenohumeral joint degenerative changes are again seen bilaterally .
    OUTPUT:
    
Low lung volumes . Mild pulmonary vascular congestion . Chronic elevation of the left hemidiaphragm with associated left basilar atelectasis .