Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild enlargement of the cardiac silhouette is re - demonstrated with a left ventricular predominance . The aorta remains mildly tortuous , and mediastinal and hilar contours are similar . Pulmonary vasculature is normal . Lungs are clear . No pleural effusion or pneumothorax is identified . No acute osseous abnormality is detected .
    OUTPUT:
    
No acute cardiopulmonary abnormality .