Table 2.
Pathological Characteristics of Patients with Pericolic Lymph Nodes Metastasis Beyond 10 cm Proximal to The Tumor and Those without Metastasis
| Variables | All patients (n = 312) | pPCN group (n = 14) | nPCN group (n = 298) | |
|---|---|---|---|---|
| Value | P value | |||
| Maximum size (cm)a | 3.2 (0–8.0) | 3.75 (2.0–6.0) | 3.0 (0–8.0) | 0.153 |
| Total no. of mesenteric lymph nodes harvestedab | 14 (0–45.0) | 17.5 (5.0–38.0) | 13.5 (0–45.0) | 0.218 |
| Total no. of positive mesenteric lymph nodesab | 0 (0–11.0) | 3.5 (1.0–14.0) | 0 (0–11.0) | 0.002 |
| No. of PCNsa | 1 (0–12.0) | 4.5 (1.0–11.0) | 0 (0–12.0) | < 0.001 |
| No. of positive PCNsa | 0 (0–6.0) | 1 (1.0–6.0) | 0 | < 0.001 |
| Patients with PCNs | 161 (51.6%) | 14 (100%) | 147 (49.3%) | < 0.001 |
| No. of SPLNsa | 6 (0–26.0) | 9.0 (0–13.0) | 6.0 (0–26.0) | 0.099 |
| No. of positive SPLNsa | 0 (0–9.0) | 2.0 (0–9.0) | 0 (0–9.0) | 0.007 |
| No. of MLNsa | 1.0 (0–19.0) | 2.0 (0–17.0) | 1.0 (0–19.0) | 0.153 |
| No. of positive MLNsa | 0 (0–3.0) | 0 (0–3.0) | 0 (0–3.0) | 0.206 |
| pT stage | 0.006 | |||
| T0–2 | 134 (42.9%) | 1 (7.1%) | 133 (44.6%) | |
| T3–4 | 178 (57.1%) | 13 (92.9%) | 165 (55.4%) | |
| pN stage | < 0.001 | |||
| N0 | 205 (65.7%) | 0 (0%) | 205 (68.8%) | |
| N1 | 83 (26.6%) | 7 (50%) | 76 (25.5%) | |
| N2 | 24 (7.7%) | 7 (50%) | 17 (5.7%) | |
| pTNM stage | < 0.001 | |||
| 0-II | 196 (62.8%) | 0 (0%) | 196 (65.8%) | |
| III-IV | 116 (37.2%) | 14 (100%) | 102 (34.2%) | |
| Histological type | 0.001 | |||
| G1/G2 | 211 (67.6%) | 4 (28.6%) | 207 (69.5%) | |
| G3/G4 | 79 (25.3%) | 10 (71.4%) | 69 (23.2%) | |
| Cancer nodule | 41 (13.1%) | 4 (28.6%) | 37 (12.4%) | 0.096 |
| Vascular invasion | 31 (9.9%) | 5 (35.7%) | 26 (8.7%) | 0.007 |
| Nerve invasion | 61 (19.6%) | 4 (28.6%) | 57 (19.1%) | 0.487 |
| Positive circumferential resection margin | 10 (3.2%) | 2 (14.3%) | 8 (2.7%) | 0.140 |
pPCN group, patients in this group with pericolic lymph nodes metastasis beyond 10 cm proximal to the tumor
nPCN group, patients in this group without pericolic lymph nodes metastasis beyond 10 cm proximal to the tumor
Data were presented as n (%); aMedian (range)
bMesenteric lymph nodes including PCNs,SPLNs, and MLNs
PCNs,pericolic lymph nodes located beyond 10 cm proximal to the tumor
SPLNs, superior rectal and perirectal lymph nodes
MLNs, main lymph nodes lied along the inferior mesenteric artery (IMA) from the origin of the left colic artery (LCA) to the root of IMA