Table 1 The relationship between lymphovascular invasion and clinicopathological features of oesophageal squamous cell carcinoma

Gender

0.437

0.427

 Male

290

78 (26.9)

72 (24.8)

 Female

106

24 (22.6)

22 (20.8)

Age

0.766

0.759

 <65 years

325

85 (26.2)

76 (23.3)

 ≥65 years

71

17 (23.9)

18 (25.4)

Smoking status

0.630

0.537

 Non-smoker

138

33 (23.9)

30 (21.7)

 Smoker

258

69 (26.7)

64 (24.8)

Tumour location

0.347

0.671

 Upper

35

7 (20.0)

8 (22.9)

 Middle

253

62 (24.5)

57 (22.5)

 Lower

108

33 (30.6)

29 (26.9)

Tumour length

1.000

0.637

 ≤4.0 cm

199

51 (25.6)

45 (22.6)

 >4.0 cm

197

51 (25.9)

49 (24.9)

Surgical approach

1.000

0.897

 Right incision

118

30 (25.4)

27 (22.9)

 Left incision

278

72 (25.9)

67 (24.1)

Differentiation

0.274

0.997

 G1

119

37 (31.1)

28 (23.5)

 G2

184

44 (23.9)

44 (23.9)

 G3

93

21 (22.6)

22 (23.7)

p T stage

0.013

0.376

 T1+T2

125

22 (17.6)

26 (20.8)

 T3+T4

271

80 (29.5)

68 (25.1)

p N stage

<0.001

<0.001

 N0

210

32 (15.2)

33 (15.7)

 N1+N2+N3

186

70 (37.6)

61 (32.8)

p TNM stage

<0.001

<0.001

 I stage

49

4 (8.2)

6 (12.2)

 II stage

164

29 (54.9)

25 (15.2)

 III stage

170

60 (35.3)

55 (32.4)

 IV stage

13

9 (69.2)

8 (61.5)

Relapse type

0.816

0.100

 Lymph node recurrence

78

23 (29.5)

25 (32.1)

 Metastasis

32

8 (25.0)

5 (15.6)