Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Underlying trauma board and other external artifact partially obscure the view . Single supine AP portable view of the chest was obtained . Endotracheal tube is seen , terminating approximately 4 .9 cm above the carina . An enteric tube is seen coursing below the diaphragm , the inferior aspect not included on the image . There are low lung volumes , which accentuate the bronchovascular markings . The cardiomediastinal silhouette is likely accentuated by low lung volumes and AP supine technique , although this will be further evaluated on pending CT torso . Possible patchy left base opacity versus related to overlying external artifact . No large pleural effusion or pneumothorax is seen . No displaced fracture identified .
    OUTPUT:
    
1 . Endotracheal tube in appropriate position . 2 . An enteric tube courses below the diaphragm , inferir aspect not included on the image . 3 . Low lung volumes accentuate the bronchovascular markings and the cardiomediastinal silhouette , which will be further evaluated on pending CT . 4 . Possible left base retrocardiac opacity versus external artifact .