Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is . Aortic knob is calcified . Mediastinal and hilar contours are unremarkable . No focal consolidation , pleural effusion or pneumothorax is present . Pulmonary vasculature is not engorged . There are mild degenerative changes within the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .