Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The mediastinal and hilar contours are unremarkable . The pulmonary vascularity is normal . The lungs are clear . No pleural effusion or pneumothorax is present . A right - sided dual - lumen central venous catheter tip terminates in the upper SVC , and appears to have been retracted in the interval slightly .
    OUTPUT:
    
No acute cardiopulmonary abnormality .