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Table 6 Univariate analysis of survival in 135 patients with squamous cell carcinoma of the middle thoracic esophagus

From: Prognostic significance of solitary lymph node metastasis in patients with squamous cell carcinoma of middle thoracic esophagus

Variable

Number of patients

5-year survival rate

Median survival (months)

P-value

Age (years)

   

0.939

≤ 60

87

51%

63

 

> 60

48

52%

61

 

Sex

   

0.500

Female

26

48%

63

 

Male

169

52%

60

 

Tumor length

   

0.903

≤ 5 cm

100

51%

63

 

> 5 cm

35

50%

88

 

Differentiation

   

0.553

G1

38

59%

74

 

G2

81

48%

59

 

G3

16

49%

60

 

T category

   

0.041

T1

30

67%

86

 

T2

26

55%

77

 

T3

79

44%

45

 

Intramural metastasis

   

0.135

No

131

52%

63

 

Yes

4

25%

29

 

Number of dissected lymph nodes

    

≤ 25

77

53%

66

0.929

> 25

58

48%

60

 

Lymphadenectomy

   

0.206

2-field

110

48%

60

 

3-field

25

66%

87

 

N

    

Negative

102

58%

74

0.008

Positive

33

32%

34