| Stage | Patient Populations | Patient Still-Alive | Percentage (%) Within 2-Year |
| 0 | 0 | 0 | 0 |
| I | 1 | 1 | 100 |
| II | 7 | 6 | 86 |
| III | 2 | 2 | 100 |
| IV | 5 | 3 | 60 |