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Survival periods and rates of different groups.
| Groups | Mean survival periods (mo) | 0.5-yr survival rate (%) | 1-yr survival rate (%) | 2-yr survival rate (%) | 3-yr survival rate (%) |
| Conservative treatment | 3.6 | 5.5 | 0 | 0 | 0 |
| Chemotherapy | 7.3 | 34.6 | 11.8 | 0 | 0 |
| Surgical resection | 10.1 | 46.8 | 22.7 | 9.8 | 0 |
| Surgical resection with chemotherapy | 15.1 | 55.8 | 39.3 | 30.4 | 15.6 |
