Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The endotracheal tube is less than 1 cm above the carina , directed towards the right mainstem orifice . An enteric tube courses along the esophagus and terminates in the stomach . The lung volumes are low . There is central vascular congestion with mild pulmonary edema . There is no definite pleural effusion and there is no pneumothorax . The cardiac silhouette is normal in size . Fiducial markers are seen in the liver .
    OUTPUT:
    
Endotracheal tube positioned at the right mainstem bronchus . The patient had expired at the time of study interpretation .