Diagnostic value of upper gastrointestinal imaging for duodenal webbing in adults: A case report

Figure 6 Schematic illustrations of duodenal web (membranes). A: It Shows a complete membrane (indicated by the blue arrow), which signifies duodenal atresia; B: Displays a membrane with a perforation, indicating duodenal stenosis; C: Presents a variant pattern of duodenal web: The membrane within the intestinal lumen extends toward the distal end, appearing like a "windsock", and the web may have a perforation or be without one.