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| Malignancy | Relative Risk | Absolute Lifetime Risk (%) |
|---|---|---|
| Desmoid | 852.0 | 15.0 |
| Duodenum | 330.8 | 3.0–5.0 |
| Thyroid | 7.6 | 2.0 |
| Brain | 7.0 | 2.0 |
| Ampullary | 123.7 | 1.7 |
| Pancreas | 4.5 | 1.7 |
| Hepatoblastoma | 847.0 | 1.6 |
| Gastric | — | 0.6a |
The Leeds Castle Polyposis Group.
From Genetics of Colorectal Cancer (NCI). Downloaded Nov 30 2009 from http://www.cancer.gov/cancertopics/pdq/genetics/colorectal/HealthProfessional/Table4
