Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . The heart size is top normal . The mediastinal and hilar contours are unremarkable . There is no pulmonary edema . Minimal streaky opacities in the lung bases likely reflect atelectasis . There is elevation of right hemidiaphragm which is of unknown chronicity . No pleural effusion or pneumothorax is identified . Degenerative changes are seen within the thoracic spine . Several surgical clips project over the right upper quadrant of the abdomen .
    OUTPUT:
    
Low lung volumes with elevation of the right hemidiaphragm , the latter of which is of unknown chronicity . Mild bibasilar atelectasis .