Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is normal . Mild widening of the superior mediastinal contour may be due to mediastinal lipomatosis . Hilar contours are unremarkable . Pulmonary vasculature is normal . No focal consolidation , pleural effusion or pneumothorax is present . No acute osseous abnormalities seen . Mild to moderate degenerative changes are noted in the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .