The Value of Surgery for Retroperitoneal Sarcoma

Table 4

Univariate analysis of prognostic factors for disease-free survival in 38 patients who underwent complete resection of their primary retroperitoneal sarcoma.

Variable	𝑁	5-year survival (%)	𝑃-value
Sex			0.69
Female	16	37
Male	22	12
Age			0.87
<55 years	15	35
>55 years	23	0
Duration of symptoms			0.02
<6 month	22	26
>6 months	11	0
Unknown	5	33
Histological subtype			0.91
Liposarcoma	20	50
Leiomyosarcoma	6	40
MFH	4	33
Other	8	0
Tumor size			0.16
<5 cm	2	50
5–10 cm	4	0
10–20 cm	17	23
>20 cm	15	—
Tumor grade			0.84
low	16	0
High	22	28
Radiation therapy			0.29
Yes	19	0
No	19	26
Chemotherapy			0.87
Neo-adjuvant	5	—
Adjuvant	2	33
Both	1	0
None	30	12