Table 2.
Factors influencing the postoperative survival for patients with retroperitoneal liposarcoma
| Items | Number (n=71) | Median survival time (months) | P (univariate) | P (multivariate) | RR |
|---|---|---|---|---|---|
| Gender | |||||
| Male | 47 | 63 (47.32, 78.68)† | 0.158 | ||
| Female | 24 | 98 (70.61, 125.40)† | |||
| Age (years) | |||||
| <60 | 56 | 84 (63.45, 104.55)† | 0.006 | 0.002 | 2.93 (1.47,5.86)† |
| ≥60 | 15 | 38 (20.33, 55.67)† | |||
| Modus operandi | |||||
| R0 resection* | 39 | 114 (84.89, 143.11)† | 0.000 | 0.000 | 3.21 (1.90,5.42)† |
| R1 resection* | 22 | 55 (37.21, 72.79)† | |||
| R2 resection* | 10 | 14 (3.15, 24.85)† | |||
| Subtype | |||||
| Well-differentiated | 37 | 104 (71.43, 136.57)† | 0.000 | ||
| Differentiated | 17 | 18 (0.52, 35.48)† | |||
| Myxoid | 12 | 65 (4.51, 125.50)† | |||
| Pleomorphic | 5 | 29 (0.00, 74.09)† | |||
| Mixed | 0 | 0 | |||
| Ascites | |||||
| Yes | 5 | 5 (2.85, 7.15)† | 0.000 | 0.027 | 6.98 (1.24,39.20)† |
| No | 66 | 81 (55.78, 106.22)† | |||
| Postoperative metastasis | |||||
| Yes | 5 | 34 (11.21, 56.79)† | 0.000 | 0.023 | 4.11 (1.22,13.87)† |
| No | 66 | 81 (55.81, 106.19)† | |||
| Tumor grade | |||||
| Low | 42 | 105 (80.72, 129.28)† | 0.000 | 0.006 | 2.70 (1.34,5.45)† |
| High | 29 | 34 (25.25, 42.75)† | |||
| Adjuvant therapy | |||||
| Yes | 35 | 59 (45.48, 72.52)† | 0.030 | ||
| No | 36 | 91 (63.72, 118.28)† | |||
| Tumor position | |||||
| Upper | 39 | 75 (48.37, 101.63)† | 0.586 | ||
| Lower | 32 | 79 (53.17, 104.83)† | |||
| Tumor size | |||||
| <20 cm | 29 | 75 (45.48, 104.52)† | 0.221 | ||
| ≥20 cm | 42 | 66 (41.01, 90.99)† | |||
| Organ resection | |||||
| Yes | 22 | 81 (28.91, 133.09)† | 0.757 | ||
| No | 49 | 75 (53.38, 96.62)† |
*R0 resection: Complete resection + clean microscopic margins; *R1 resection: Complete resection + positive microscopic margins; *R2 resection: Palliative operations; †(xx, xx): 95% confidence interval; RR: Relative risk.