Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single supine AP portable view of the chest was obtained . Endotracheal tube is seen , terminating approximately 2 .8 cm above the level of the carina . There are extensive bilateral pulmonary opacities , right greater than left with suggestion of air bronchograms seen in the retrocardiac region . Findings may be due to massive aspiration with atelectasis , although infection or pulmonary hemorrhage is not excluded . Slight blunting of the left costophrenic angle may be due to overlying soft tissue , though a trace effusion can not be excluded . There is no evidence of pneumothorax . The cardiac silhouette is likely accentuated by supine , AP technique , aortic knob calcification is seen .
    OUTPUT:
    
Bilateral pulmonary opacities may be due to massive aspiration , although diffuse infection or pulmonary hemorrhage or contusion not excluded .