Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours are unchanged , and within normal limits . The pulmonary vascularity is not engorged . The lungs are clear . No pleural effusion or pneumothorax is present . Ventriculoperitoneal shunt catheter courses along the right anterior hemithorax . No acute osseous abnormalities are detected .
    OUTPUT:
    
No acute cardiopulmonary abnormality .