Table 2 Univariate analysis of prognostic factors influencing 5-year-survival-rate/Progression free survival in 46 patients with retroperitoneal soft tissue sarcoma

Age (years)

0.039

0.740

  < 55

20

2 (10.0%)

89.5%

7.0

19

10 (52.6%)

37.3%

13.3

  > 55

26

9 (34.6%)

63.1%

10.5

20

9 (45.0%)

27.7%

20.5

Gender

0.643

0.112

 Male

25

5 (20.0%)

75%

10.2

21

8 (38.1%)

40.9%

16.3

 Female

21

6 (28.6%)

66.8%

11.2

18

11 (61.1%)

26.6%

13.6

Presentation

0.001

0.753

 No recurrence

17

0 (0%)

100%

0

 Single recurrence

10

6 (60.0%)

40%

9.5

 Multiple recurrence

12

1 (8.3%)

91.7%

8.0

Tumor Grade

0.125

 High

22

8 (36.4%)

59.4%

11.3

17

9 (52.9%)

38.2%

14.5

 Low

24

3 (12.5%)

85.6%

7.7

22

10 (45.5%)

29.0%

15.6

Tumor size

0.711

0.711

  < 20 cm

22

5 (22.7%)

72.1%

10.9

19

10 (52.6%)

37.2%

14.0

  > 20 cm

24

6 (25.0%)

70.9%

10.2

20

9 (45.0%)

30.1%

16.2

Resection status

0.03

0.212

 R0

28

4 (14.3%)

77.6%

10.6

28

11 (39.3%)

45.4%

15.1

 R1

11

3 (27.3%)

70.0%

14.5

11

8 (72.7%)

21.2%

13.2

 R2

7

4 (57.1%)

42.9%

18.7

 Local resection

18

3 (16.7%)

80.8%

9.9

0.267

13

6 (46.2%)

44.1%

16.6

0.582

 Visceral resection

28

8 (28.6%)

65.2%

10.1

26

13 (50.0%)

26.5%

14.3

Radiotherapy

0.060

0.362

 S + RT

23

3 (13.0%)

82.3%

9.8

22

9 (40.9%)

41.2%

18.3

 SO

23

8 (34.8%)

58.6%

11.4

17

10 (58.8%)

26.8%

12.6

Chemotherapy

0.344

0.899

 Yes

7

3 (42.6%)

57.1%

18.7

5

3 (60.0%)

40.0%

21.9

 None

39

8 (20.5%)

74.1%

8.2

34

16 (47.1%)

28.7%

12.6