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Table 4 Distributions of TDLNs, PDLNs, NDLNs, and positive rate for overall CRC patients, CRC patients with ≤ 15 TDLNs, and CRC patients with > 15 TDLNs according to the pathological T status among the 73 CRC patients

From: A reappraisal of lymph node dissection in colorectal cancer during primary surgical resection

Part I

Overall (n = 73)

T1 (n = 4)

T2 (n = 9)

T3 (n = 56)

T4 (n = 4)

p value*

No. of TDLNs (Mean ± SD)

20.7 ± 11.8

21.5 ± 11.3

13.3 ± 10.5

21.3 ± 11.6

29.5 ± 12.9

0.116

No. of PDLNs (Mean ± SD)

3.6 ± 5.2

0.0 ± 0.0

0.1 ± 0.3

4.1 ± 5.4

7.0 ± 6.4

0.001

Positive rate (Mean ± SD, %)

18.1 ± 23.6

0.0 ± 0.0

0.3 ± 1.0

21.8 ± 24.6

24.1 ± 23.1

0.001

No. NDLNs (Mean ± SD)

17.2 ± 11.2

21.5 ± 11.3

13.2 ± 10.3

17.1 ± 11.3

22.5 ± 13.5

0.359

Part II

No. of PDLNs (Mean ± SD)

 
 

Overall (n = 73)

T1 (n = 4)

T2 (n = 9)

T3 (n = 56)

T4 (n = 4)

 

No. of TDLNs 15 (n = 28, T1/T2/T3/T4, 2/7/19/0)

1.9 ± 3.0

0.0 ± 0.0

0.0 ± 0.0

2.8 ± 3.3

-

 

No. of TDLNs > 15 (n = 45, T1/T2/T3/T4, 2/2/37/4)

4.6 ± 5.9

0.0 ± 0.0

0.5 ± 0.7

4.8 ± 6.1

7.0 ± 6.4

 

p value**

0.030

1.000

0.061

0.190

-

 

Part III

Positive rate (mean ± SD, %)

 
 

Overall (n = 73)

T1 (n = 4)

T2 (n = 9)

T3 (n = 56)

T4 (n = 5)

 

No. of TDLNs 15 (n = 28, T1/T2/T3/T4, 2/7/19/0)

19.5 ± 27.5

0.0 ± 0.0

0.0 ± 0.0

28.8 ± 29.3

-

 

No. of TDLNs > 15 (n = 45, T1/T2/T3/T4, 2/2/37/4)

17.2 ± 21.0

0.0 ± 0.0

1.5 ± 2.1

18.2 ± 21.4

24.1 ± 23.1

 

p value**

0.686

1.000

0.061

0.131

-

 

Part IV

No. of N DLNs (Mean ± SD)

 
 

Overall (n = 73)

T1 (n = 4)

T2 (n = 9)

T3 (n = 56)

T4 (n = 5)

 

No. of TDLNs 15 (n = 31, T1/T2/T3/T4, 2/7/19/0)

7.7 ± 4.2

12.0 ± 4.2

8.4 ± 4.1

7.0 ± 4.1

-

 

No. of TDLNs > 15 (n = 45, T1/T2/T3/T4, 2/2/37/4)

23.1 ± 10.2

31.0 ± 1.4

30.0 ± 4.2

22.4 ± 10.2

22.5 ± 13.5

 

p value**

< 0.001

0.027

0.040

< 0.001

-

 
  1. No. number, TDLNs total dissected lymph nodes, PDLNs positive dissected lymph nodes, NDLNs negative dissected lymph nodes, Positive rate No. PDLNs/No. TDLNs, %, SD = Standard deviation
  2. *Compared among T1, T2, T3, and T4 status, ANOVA/Kruskal-Wallis H test
  3. **Compared between TDLN≤ 15 and TDLN> 15, Student’s t test/Mann–Whitey U test