Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette size is normal . The mediastinal and hilar contours are normal . The lungs are clear and the pulmonary vascularity is normal . No pleural effusion or pneumothorax is demonstrated although the extreme right costophrenic angle is excluded from the field of view . There is no acute osseous abnormality .
    OUTPUT:
    
No acute cardiopulmonary abnormality .