Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes are present . This accentuates the size of the cardiac silhouette which is likely top - normal . The mediastinal and hilar contours are unremarkable . There is crowding of the bronchovascular structures . Patchy opacities in the lung bases likely reflect atelectasis . No pleural effusion is present . No pneumothorax or overt pulmonary vascular congestion is present . An inferior vena cava filter is detected . There are no acute osseous abnormalities .
    OUTPUT:
    
Low lung volumes with bibasilar atelectasis .