Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left internal jugular central venous catheter and enteric tubes remain in unchanged positions . Heart size is normal . Mediastinal and hilar contours are unremarkable . Lungs are clear without focal consolidation . No large pleural effusion or pneumothorax is demonstrated . No subdiaphragmatic free air is present .
    OUTPUT:
    
No acute cardiopulmonary abnormality . No subdiaphragmatic free air .