Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are slightly low . This accentuates the size of the cardiac silhouette which is likely top normal . Mediastinal and hilar contours are unremarkable . Pulmonary vasculature is normal . No focal consolidation , pleural effusion or pneumothorax is present . There are mild degenerative changes in the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .