Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes are present . Cardiac silhouette size is exaggerated as result of low lung volumes and appears moderately enlarged . Mediastinal and hilar contours are grossly unchanged . There is crowding of bronchovascular structures without overt pulmonary edema . Patchy atelectasis is noted in the lung bases without focal consolidation . No large pleural effusion or pneumothorax is present . Previously demonstrated nodules in the lungs are better seen on prior CT . Moderate multilevel degenerative changes are seen in the thoracic spine .
    OUTPUT:
    
Low lung volumes with bibasilar atelectasis . Known nodules seen on prior chest CT are not well visualized on the current radiograph .