Table 3.
Univariate analysis of prognostic factors for overall survival in 41 patients with primary retroperitoneal sarcoma.
| Variable | N | 5-year survival (%) | P-value |
|---|---|---|---|
| Sex | 0.89 | ||
| Female | 18 | 55 | |
| Male | 23 | 48 | |
| Age | 0.14 | ||
| <55 years | 16 | 76 | |
| >55 years | 25 | 33 | |
| Duration of symptoms | 0.53 | ||
| <6 month | 25 | 52 | |
| >6 months | 11 | 0 | |
| Unknown | 5 | 50 | |
| Histological subtype | 0.94 | ||
| Liposarcoma | 22 | 77 | |
| Leiomyosarcoma | 7 | 60 | |
| MFH | 4 | 33 | |
| Other | 8 | 0 | |
| Tumor size | 0.26 | ||
| <5 cm | 2 | 100 | |
| 5–10 cm | 4 | 100 | |
| 10–20 cm | 18 | 21 | |
| >20 cm | 17 | 60 | |
| Tumor grade | 0.05 | ||
| Low | 17 | 100 | |
| High | 24 | 27 | |
| Resection | 0.39 | ||
| R0/R1 | 38 | 42 | |
| R2 | 3 | 50 | |
| Resection high-grade tumor only | 0.03 | ||
| R0/R1 | 22 | 74 | |
| R2 | 2 | 44 | |
| Radiation therapy | 0.40 | ||
| Yes | 19 | 53 | |
| No | 22 | 63 | |
| Chemotherapy | 0.57 | ||
| Neo-adjuvant | 5 | 30 | |
| Adjuvant | 2 | — | |
| Both | 1 | — | |
| None | 33 | 43 |
Multivariate analysis significant for grade (P = .006).