Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable supine chest radiograph was obtained . Endotracheal tube terminates in the midtrachea 4 .9 cm above the carina . Nasogastric tube courses into the stomach and out of view . The lungs are low in volume with bilateral perihilar opacities which could reflect edema and more confluent retrocardiac opacity which could reflect aspiration given the clinical setting . There is no pleural effusion or pneumothorax . The heart is top normal in size with normal mediastinal and hilar contours .
    OUTPUT:
    
Perihilar opacities could reflect pulmonary edema with more confluent retrocardiac opacity which is concerning for aspiration given the clinical setting .