Table 1 Surgical characteristics and pre-operative laboratory parameters in 72 patients with primary retroperitoneal liposarcoma

Gender

 Male

47

24

23

 Female

25

18

7

Age (years) (mean ± SD)

57.49 ± 10.92

59.13 ± 11.64

55.3 ± 9.64

Symptoms

 Yes

33

19

14

 No

39

23

16

Histologic subtypes

 Well-differentiated (WDLPS)

47

25

22

 Myxoid/round cell (MLPS)

6

4

2

 Dedifferentiated (DDLPS)

18

13

5

 Pleomorphic (PLPS)

1

0

1

FNCLCC

 Grade1

31

19

12

 Grade2

27

13

14

 Grade3

14

10

4

Tumor burden, cm median (IQR)

20, 15–29.5

20, 13–29

20, 15–30

Combined-organ resection

 Yes

54

32

22

 No

18

10

8

Operation duration, hours median (IQR)

4.0, 3.0–5.0

4.0, 3.0–5.0

4.0, 2.0–5.0

Estimated blood loss, mL median (IQR)

400, 200–700

500, 100–825

300, 200–500

Blood transfusion

 Yes

20

14

6

 No

52

28

24

ICU stay

 Yes

49

30

19

 No

23

12

11

Complications

 Yes

26

17

9

 No

46

25

21

Clavien-Dindo classification

 ≤ 2

64

34

30

 > 2

8

8

0

Postoperative hospital stays, days median (IQR)

15, 12–22.75

16, 13–24

14, 9–21

BMI (mean ± SD)

23.48 ± 3.78

22.48 ± 3.79

24.9 ± 3.35

ALB, g/L (mean ± SD)

38.51 ± 5.77

38.44 ± 5.74

38.61 ± 5.91

PALB, g/L (mean ± SD)

0.21 ± 0.08

0.20 ± 0.08

0.22 ± 0.08

A/G (mean ± SD)

1.46 ± 0.39

1.47 ± 0.39

1.46 ± 0.39

Hb, g/L (mean ± SD)

124.42 ± 17.01

120.76 ± 16.35

129.43 ± 16.88

SCr,μmol/L (mean ± SD)

74.3 ± 18.15

74.09 ± 20.27

74.61 ± 15.07

SMA, cm² (mean ± SD)

111.81 ± 28.81

95.47 ± 17.39

134.67 ± 26.02

SMI (mean ± SD)

40.64 ± 8.85

35.03 ± 4.79

48.5 ± 7.05

PMA, cm² (mean ± SD)

14.23 ± 5.06

12.28 ± 3.66

16.95 ± 5.54

PMI (mean ± SD)

5.15 ± 1.63

4.49 ± 1.14

6.08 ± 1.77

Fat area, cm² (mean ± SD)

78.24 ± 46.7

76.26 ± 44.48

80.56 ± 49.86