Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low . The cardiac silhouette size appears mildly enlarged but stable . Mediastinal and hilar contours are unchanged . There is crowding of the bronchovascular structures , but no overt pulmonary edema is present . No focal consolidation , pleural effusion or pneumothorax is identified . There are multilevel degenerative changes in the thoracic spine with anterior osteophyte formation .
    OUTPUT:
    
Low lung volumes but no acute cardiopulmonary abnormality .