Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are reduced compared to the previous exam . Heart size appears mildly enlarged , increased compared to the previous exam , but this is likely accentuated due to the lower lung volumes . Mediastinal contours are unchanged . Calcified right mediastinal node is compatible with prior granulomatous disease . There is crowding of the bronchovascular structures , with possible mild pulmonary vascular congestion but no overt pulmonary edema is demonstrated . Bibasilar opacities are seen in the lung bases , most compatible with atelectasis , without focal consolidation . No pleural effusion or pneumothorax is visualized . Right - sided indentation upon the trachea at the thoracic inlet may reflect an underlying thyroid goiter , and is unchanged . There are multilevel degenerative changes in the thoracic spine . Cholecystectomy clips are re - demonstrated in the right upper quadrant of the abdomen .
    OUTPUT:
    
Low lung volumes with probable bibasilar atelectasis .