Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Endotracheal tube is in standard position , terminating approximately 5 .6 cm from the carina . An enteric tube tip and side port are within the stomach . Left internal jugular central venous catheter tip terminates at the confluence of the brachiocephalic veins . Heart size is mildly enlarged . Mediastinal and hilar contours are unremarkable . No pulmonary edema is demonstrated . No large pleural effusion or pneumothorax is seen . Retrocardiac opacity may reflect atelectasis but infection or aspiration can not be excluded . No acutely displaced fractures are seen .
    OUTPUT:
    
1 . Standard positioning of the endotracheal and enteric tubes . 2 . Left internal jugular central venous catheter tip at the confluence of the brachiocephalic veins . 3 . Retrocardiac opacity may reflect atelectasis but infection or aspiration can not be excluded .