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Results of surgical treatment according to van der Waal classification based on the histological picture. Statistically relapse is more often in level III (p = 0.01)
| Level | Relapse | Cure |
|---|---|---|
| I | 7 (20.0) | 28 (80.0) |
| II | 2 (22.2) | 7 (77.8) |
| III | 4 (66.7) | 2 (33.3) |
| IV | – | – |
| Total | 13 | 37 |
