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Follow-up of the adenoma group
| Nonhigh-grade | High-grade | Overall | |
|---|---|---|---|
|
n |
51 |
52 |
103 |
| Recurrence free (n) |
47 |
49 |
96 |
| Lost to follow-up (n) |
1 |
3 |
4 |
| Recurrences (n) |
3 |
0 |
3 |
| Mean relapse-free survival (months) |
19.4 |
22.9 |
21.1 |
| Mean duration of observation period (months) | 20.7 | 22.9 | 21.8 |
