Table 3.
Pathological outcomes
| All patients | No CME | CME | P* | |
|---|---|---|---|---|
| T category | 0.920 | |||
| T1 | 63 (6.3) | 34 (54.0) | 29 (46.0) | |
| T2 | 278 (27.7) | 142 (51.1) | 136 (48.9) | |
| T3 | 619 (61.7) | 312 (50.4) | 307 (49.6) | |
| T4 | 40 (4.0) | 19 (47.5) | 21 (52.5) | |
| Not available | 4 (0.4) | 1 (25.0) | 3 (75.0) | |
| N category | 0.950 | |||
| N0 | 697 (69.4) | 351 (50.4) | 346 (49.6) | |
| N1 | 180 (17.9) | 93 (51.7) | 87 (48.3) | |
| N2 | 125 (12.5) | 64 (51.2) | 61 (48.8) | |
| Not available | 2 (0.2) | 0 (0) | 2 (100) | |
| Tumour grade | 0.499 | |||
| 1 | 34 (33.9) | 16 (47.1) | 18 (52.9) | |
| 2 | 706 (70.3) | 366 (51.8) | 340 (48.2) | |
| 3 | 261 (26.0) | 125 (47.9) | 136 (52.1) | |
| Not available | 3 (0.3) | 1 (33.3) | 2 (66.7) | |
| Lymphatic invasion | 0.344 | |||
| L0 | 252 (25.1) | 121 (48.0) | 131 (52.0) | |
| L1 | 750 (74.7) | 387 (51.6) | 363 (48.4) | |
| Not available | 2 (0.2) | 0 (0) | 2 (100) | |
| Venous invasion | 0.377 | |||
| V0 | 483 (48.1) | 252 (52.2) | 231 (47.8) | |
| V1 | 519 (51.7) | 256 (49.3) | 263 (50.7) | |
| Not available | 2 (0.2) | 0 (0) | 2 (100) | |
| Perineural invasion | 0.049 | |||
| Pn0 | 885 (88.1) | 459 (51.9) | 426 (48.1) | |
| Pn1 | 117 (11.7) | 49 (41.9) | 68 (58.1) | |
| Not available | 2 (0.2) | 0 (0) | 2 (100) | |
| UICC stage | 0.960 | |||
| I | 302 (30.1) | 151 (50.0) | 151 (50.0) | |
| II | 394 (39.2) | 199 (50.5) | 195 (49.5) | |
| III | 304 (30.3) | 157 (51.6) | 147 (48.4) | |
| IV | 2 (0.2) | 1 (50.0) | 1 (50.0) | |
| Not available | 2 (0.2) | 0 (0) | 2 (100) | |
| R classification | – | |||
| R0 | 1001 (99.7) | 507 (50.6) | 494 (49.4) | |
| R1 | 0 (0) | 0 (0) | 0 (0) | |
| Not available | 3 (0.3) | 1 (33.3) | 2 (66.7) | |
| Tumour location | 0.588 | |||
| Caecum | 410 (40.8) | 213 (51.9) | 197 (48.0) | |
| Ascending colon | 500 (49.8) | 248 (49.6) | 252 (50.4) | |
| Hepatic flexure | 72 (7.2) | 33 (45.8) | 39 (54.2) | |
| Right transverse colon | 4 (0.4) | 3 (75.0) | 1 (25.0) | |
| Overlapping | 18 (1.8) | 11 (61.1) | 7 (38.9) | |
| Histological type | 0.570 | |||
| Adenocarcinoma | 699 (69.6) | 353 (50.5) | 346 (49.5) | |
| Partial mucinous | 253 (25.2) | 131 (51.8) | 122 (48.2) | |
| Mucinous | 52 (5.2) | 24 (46.2) | 28 (53.8) | |
| CME grade19 | 0.119 | |||
| I | 996 (99.2) | 507 (50.9) | 489 (49.1) | |
| II | 6 (0.6) | 1 (16.7) | 5 (83.3) | |
| Not available | 2 (0.2) | 0 (0) | 2 (100) | |
| Mesocolic area (mm2), mean(s.d.) | 9947 (7327) | 11 444 (7967) | 0.002† | |
| < 15 000 | 548 (54.6) | 288 (52.6) | 260 (47.4) | 0.013 |
| ≥ 15 000 | 261 (26.0) | 111 (42.5) | 150 (57.5) | |
| Not available | 195 (19.4) | 109 (55.9) | 86 (44.1) | |
| No. of lymph nodes, mean(s.d.) | 50.4 (16.8) | 55.6 (17.6) | <0.001† |
Values are n (%) unless otherwise indicated. CME, complete mesocolic excision. *χ2test, except †? test.