Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours are normal . Pulmonary vasculature is normal . Lungs are clear . No pleural effusion or pneumothorax is present , although the extreme left costophrenic angle is excluded from the field of view . No acute osseous abnormality is seen .
    OUTPUT:
    
No acute cardiopulmonary abnormality .