Table 4 Analysis of CT characteristics associated with recurrence

cN classication

0

9(37.5)

6(24.0)

0.305

1

15(62.5)

19(76.0)

Vascular invasion

0

22(91.7)

18(72.0)

0.138

1

2(8.3)

7(28.0)

Vascular tumor thrombus

0

24(100.0)

25(100.0)

NA

1

0

0

Necrosis

0

23(95.8)

25(100.0)

0.49

1

1(4.2)

0(0.0)

Short diameter

13.85 ± 3.96

16.26 ± 6.57

0.129

Long diameter

47.17 ± 17.01

54.86 ± 15.96

0.110

Lymph node necrosis

0

22(91.7)

17(68.0)

0.074

1

2(8.3)

8(32.0)

CT value in plain scan

35.52 ± 10.45

38.26 ± 9.05

0.333

ROI CT value in plain scan

30.23 ± 9.47

35.62 ± 8.75

0.044

Aorta CT value in plain scan

43.17 ± 7.34

40.58 ± 9.43

0.291

Lymph node CT value in plain scan

28.35 ± 14.27

35.71 ± 13.10

0.116

CT value in arterial phase

78.85 ± 21.07

80.78 ± 14.59

0.711

ROI CT value in arterial phase

72.63 ± 18.12

77.24 ± 13.11

0.311

Aorta CT value in arterial phase

139.38 ± 20.72

145.58 ± 21.92

0.314

Lymph node CT value in arterial phase

69.09 ± 18.38

74.18 ± 28.66

0.535

CT value in venous phase

78.31 ± 24.66

75.42 ± 19.36

0.649

ROI CT value in venous phase

72.15 ± 22.61

71.98 ± 19.87

0.978

Aorta CT value in venous phase

248.44 ± 50.37

265.42 ± 56.49

0.273

Lymph node CT value in venous phase

59.63 ± 20.41

73.50 ± 25.24

0.087

CT value in delayed phrase

68.71 ± 23.32

73.60 ± 20.08

0.435

ROI CT value in delayed phase

66.23 ± 22.63

71.22 ± 17.61

0.392

Aorta CT value in delayed phase

111.02 ± 33.03

110.08 ± 25.16

0.911

Lymph node CT value in delayed phase

43.20 ± 33.26

60.61 ± 23.81

0.065

Enhancement type

1

4(16.7)

3(12.0)

0.926

2

12(50.0)

14(56.0)

3

8(33.3)

8(32.0)

Relative CT value in arterial phase

0.15 ± 0.13

0.21 ± 0.18

0.172

Relative CT value in venous phase

0.32 ± 0.27

0.40 ± 0.27

0.299

Relative CT value in venous phase

0.36 ± 0.32

0.44 ± 0.30

0.347

Lymph node relative CT value in arterial phase

0.24 ± 0.06

0.27 ± 0.16

0.518

Lymph node relative CT value in venous phase

0.51 ± 0.12

0.47 ± 0.22

0.587

Lymph node relative CT value in delayed phase

0.59 ± 0.15

0.53 ± 0.25

0.403

Lymph node enhancement type

1

3

6

0.348

2

7

4

3

5

9