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Progression stage and prognosis
| Stage | Prognosis | No. of cases |
|---|---|---|
| 0, I (6) | No recurrence | 5 |
| Local recurrence | 1 | |
| II (16) | No recurrence | 8 |
| Local recurrence | 2 | |
| Distance metastasis | 1 | |
| Death | 5 | |
| IIIa (2) | Death | 2 |
| IIIb (4) | No recurrence | 2 |
| Death | 2 | |
| IIIc (l) | Death | 1 |
| IV (1) | Death | 1 |
| Classification not possible (4) | Death | 4 |
