Table 1 Clinicopathological parameters in relation to late cervical lymph node metastasis in patients with TSCC

Age,yrs:

  < 65

12

4

8

  ≥ 65

13

5

8

Sex

 Male

9

2

7

 Female

16

7

9

Clinical stage (UICC 7th Ed.):

 T1N0

12

3

9

 T2N0

13

6

7

Clinical stage (UICC 8th Ed.):

 T1N0

8

1

7

 T2N0

17

8

9

Imaging modalities (Total number):

 CT

25

9

16

 US

4

2

2

 MRI

4

3

1

 FDG-PET

18

8

10

Histological grade:

 Grade 1

8

1

7

 Grade 2

10

4

6

 Grade 3

7

4

3

MOI:

 Type 1

2

0

2

 Type 2

5

1

4

 Type 3

11

4

7

 Type 4C

3

0

3

 Type 4D

4

4

0

DOI:

  < 4 mm

14

1

12

  ≥ 4 mm

11

8

4

LVI:

 -

12

2

10

  + 

13

7

6

PNI:

 -

20

5

15

  + 

5

4

1