Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . Mediastinal and hilar contours are unremarkable , and the lungs are clear . No pleural effusion or pneumothorax is present . The pulmonary vascularity is normal . No acute osseous abnormalities are present .
    OUTPUT:
    
No acute cardiopulmonary abnormality .