Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is mild to moderate enlargement of cardiac silhouette . The mediastinal and hilar contours are unremarkable , and the pulmonary vasculature is normal . There is no focal consolidation , pleural effusion or pneumothorax identified . Degenerative changes are seen within the right acromioclavicular joint .
    OUTPUT:
    
No acute cardiopulmonary abnormality .