Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: NG tube tip overlies the gastric antrum . Shunt catheter appear in unchanged position . Lung volumes remain low and severe bibasilar atelectasis are unchanged . Pulmonary vascular congestion is noted . There is probable small left pleural effusion . Cardiomediastinal silhouette is unchanged .
    OUTPUT:
    
NG tube terminates in the gastric antrum .