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Cancer risk by Spigelman stage
| Stage | Duodenal cancer risk |
|---|---|
| Spigelman stage 0 | Lifetime risk = 0% 10-year risk = 0% |
| Spigelman stage I | Lifetime risk = 0% 10-year risk = 0% |
| Spigelman stage II | Lifetime risk = 12% 10-year risk = 2% |
| Spigelman stage III | Lifetime risk = 13% 10-year risk = 2% |
| Spigelman stage IV | Lifetime risk = 33% 10-year risk = 36% |
