Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A frontal chest radiograph demonstrates a nasoenteric tube with the tip within the ___ portion of the duodenum . The cardiomediastinal silhouette is normal . The lungs are clear . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Postpyloric nasoenteric tube with the tip in the first portion of the duodenum .