Natural course of familial adenomatous polyposis (FAP)
| Stage | No of patients | Age (y)* |
|---|---|---|
| *Median (range). | ||
| Development of adenomas | 44 | 17 (5–56) |
| Symptoms | 196 | 34 (2–73) |
| Diagnosis of FAP | 248 | 35 (5–73) |
| Diagnosis of colorectal cancer | 159 | 40 (15–69) |
| Death from colorectal cancer | 45 | 44 (27–69) |