Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Heart size is normal . Mediastinal and hilar contours are unremarkable . The pulmonary vascularity is normal . No focal consolidation , pleural effusion or pneumothorax is identified . There are mild to moderate degenerative changes are noted within the imaged thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .