Spigelman 0 and I: | Endoscopy at intervals of 5 years |
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Spigelman Stage II: | Endoscopy at intervals of 3 years |
Spigelman Stage III: | Endoscopy at intervals of 1-2 year |
 | Consider endoscopic ultrasonography Consider celecoxib 800 mg/d |
Spigelman Stage IV: | Endoscopic ultrasonography (EUS) |
 | Consider surgery: Pancreas-sparing or pylorus-sparing duodenectomy |