Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is top normal . Mediastinal and hilar contours are unremarkable . Pulmonary vasculature is normal . The lungs are clear . No pleural effusion or pneumothorax is seen . No acute osseous abnormality is identified .
    OUTPUT:
    
No acute cardiopulmonary abnormality .