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评分系统
Scoring system
| Factor | Score | |||
| 0 | 1 | 2 | 4 | |
| Age | < 40 | ≥40 | - | - |
| Antecedent pregnancy | Mole | Abortion | Term | - |
| Interval months from index pregnancy | < 4 | 4- < 7 | 7- < 13 | ≥13 |
| Pre-treatment serum hCG (IU/mL) | < 103 | 103-104 | 104-105 | ≥105 |
| Largest tumour size (cm) (including uterus) | < 3 | 3- < 5 | ≥5 | - |
| Site of metastasis | Lung | Spleen, kidney | Gastro-intestinal | Liver, brain |
| Number of metastases | - | 1-4 | 5-8 | >8 |
| Previous failed chemotherapy | - | - | Single drug | 2 or more drugs |
