Table 2:
Prognostic factors: clinicopathological
| Factor | Number of patients | Five-year survival (%) | Median survival (months) | Prognostic significance |
|---|---|---|---|---|
| Size of largest metastasis | ||||
| ≤35 mm | 34 (65.4%) | 58.8 | n.p. | |
| >35 mm | 18 (34.6%) | 22.2 | 23.1 | P = 0.023 |
| Number of metastases at first metastasectomy | ||||
| 1 | 26 (50.0%) | 47.5 | 53.3 | |
| 2 | 12 (23.0%) | 38.1 | 37.6 | *P = 0.800 |
| 3 | 7 (13.5%) | 57.1 | 62.7 | *P = 0.819 |
| 4 or more | 7 (13.5%) | 28.6 | 17.5 | *P = 0.113 |
| Cumulative number of operations | ||||
| 1 | 29 (55.8%) | 40.3 | 42.6 | |
| 2 | 16 (30.8%) | 45.1 | 53.3 | P = 0.474 |
| 3 or more | 7 (13.4%) | 57.1 | 70.8 | P = 0.416 |
| Location of the primary | ||||
| Uterus | 8 (15.4%) | 33.3 | 40.1 | |
| Extremities | 25 (48.1%) | 49.8 | 53.3 | P = 0.715 |
| Trunk | 19 (36.5%) | 43.4 | 42.6 | P = 0.970 |
| Sarcoma category | ||||
| Osteogenic | 8 (15.4%) | 58.3 | n.p. | |
| Myogenic | 20 (38.5%) | 44.1 | 50.3 | P = 0.222 |
| Soft tissue | 24 (46.1%) | 37.5 | 25.0 | P = 0.091 |
| Age | ||||
| ≤55 years | 24 (46.2%) | 57.3 | 70.8 | |
| >55 years | 28 (53.8%) | 34.1 | 25.0 | P = 0.022 |
| All patients | 52 (100%) | 44.7 | 50.3 | |
n.p.: Not possible.
*Probabilities are calculated vs 1 metastasis.
Probabilities are calculated vs osteogenic sarcomas.