Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is mild enlargement of the cardiac silhouette which is unchanged . The mediastinal and hilar contours are normal . The pulmonary vascularity is normal . Lungs are clear . No focal consolidation , pleural effusion or pneumothorax is identified . There are no acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary process .