Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal portable AP upright chest radiograph obtained . Tip of the Dobbhoff tube resides in the distal esophagus . Advancement is needed for more optimal positioning . The lungs are clear . Cardiomediastinal silhouette is normal . Bony structures are intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
Suboptimal position of Dobbhoff tube with tip in the distal esophagus . Advancement is recommended .