Table 1 Patients characteristics, venous resection vs. no venous resection

Sex

0.24

M

27

(50.0 %)

61

(59.8 %)

F

27

(50.0 %)

41

(40.2 %)

Age, mean (STD). yrs

67.8

(10.7)

67.2

(11)

0.95

Preoperative performance status

ASA

0.86

1

3

(5.6 %)

8

(7.8 %)

2

31

(57.4 %)

58

(56.9 %)

3

20

(37.0 %)

36

(35.3 %)

Diabetes mellitus

16

(29.6 %)

27

(26.5 %)

0.67

Bile duct stent

18

(33.3 %)

39

(38.2 %)

0.54

Pancreatitis

2

(3.7 %)

12

(11.8 %)

0.09

Neoadjuvant treatment

4

(7.4 %)

6

(5.9 %)

0.43

Type of Surgery

0.001

pp-Whipple

25

(46.3 %)

63

(61.7 %)

cl-Whipple

8

(14.8 %)

6

(5.9 %)

TP

16

(29.6 %)

9

(8.8 %)

DP

5

(9.3 %)

22

(21.7 %)

DPH

0

2

(1.9 %)

Vein resection technique

End-to-End-Anastomosis

33

(61.1 %)

Wedge-Resection

15

(27.8 %)

goretex™ graft

6

(11.1 %)

Operative time, mean (STD), min.

378

(103)

317

(85)

<0.001²

Blood transfusion

9

(16,7 %)

4

(4,0 %)

0.012

Adjuvant chemotherapy

46

(85.2 %)

87

(85.3 %)

0.97

Pathological findings

Tumor grade of differentiation

0.28

G1

1

(1.8 %)

8

(7.8 %)

G2

25

(46.3 %)

41

(40.2 %)

G3

28

(51.9 %)

53

(52.0 %)

T-stage

0.36

T1

1

(1.8 %)

4

(3.9 %)

T2

3

(5.6 %)

7

(6.9 %)

T3

41

(75.9 %)

83

(81.4 %)

T4

9

(16.7 %)

8

(7.8 %)

Tumor size in cm (median, min-max)

4.3

1.5-12

3.5

1.2-8.5

0.026³

Nodal status

0.82

0

16

(29.6 %)

32

(31.4 %)

1

38

(70.4 %)

70

(68.6 %)

Number of lymph nodes (median, min-max)

21

(5–62)

20

(7–54)

0.92

Resection margins

0.046⁴

R0

22

(40.8 %)

60

(58.8 %)

R1

24

(44.4 %)

31

(30.4 %)

R2

0

1

(1.0 %)

Rx

8

(14.8 %)

10

(9.8 %)

Pathology report: venous infiltration

no

8

(14.8 %)

yes

19

(35.2 %)

unkown

27

(50.0 %)