Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is borderline enlarged . The aorta remains tortuous . Mediastinal and hilar contours are otherwise stable . Lungs are clear . Pulmonary vasculature is normal . No pleural effusion or pneumothorax is present . No acute osseous abnormality is visualized
    OUTPUT:
    
No acute cardiopulmonary abnormality .