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 | - |