Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . The aorta is tortuous . The mediastinal and hilar contours are otherwise unremarkable . The pulmonary vasculature is normal . There is left basilar atelectasis . Lungs are otherwise clear . No pleural effusion or pneumothorax is seen . There are no acute osseous abnormalities . A VP shunt extends caudally from the left neck and along the anterior chest wall with tip outside the inferior border of the film . No subdiaphragmatic free air .
    OUTPUT:
    
No acute cardiopulmonary abnormality .