Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes are present . The heart size is mildly enlarged but stable . The mediastinal and hilar contours are unchanged , with diffuse calcification of the thoracic aorta and prominence of both hila . There is mild pulmonary edema . Small bilateral pleural effusions are noted . Patchy opacities in the lung bases may reflect atelectasis but infection can not be excluded . There are no acute osseous abnormalities detected . Loss of height of a vertebral body at the thoracolumbar junction is unchanged .
    OUTPUT:
    
Mild pulmonary edema and small bilateral pleural effusions . Patchy bibasilar airspace opacities could reflect atelectasis but infection is not excluded .