Table 1.
Clinicopathological characteristics according to tumor location
| Variable | Total | RCC group | LCC group | p value |
|---|---|---|---|---|
| No. of patients | 793 | 304 | 489 | |
| Age (yr) | 0.031 | |||
| ≤65 | 396 (49.9) | 137 (45.1) | 259 (53.0) | |
| >65 | 397 (50.1) | 167 (54.9) | 230 (47.0) | |
| Sex | 0.030 | |||
| Male | 430 (54.2) | 150 (49.3) | 280 (57.3) | |
| Female | 363 (45.8) | 154 (50.7) | 209 (42.7) | |
| Comorbidity | 0.597 | |||
| No | 421 (53.1) | 165 (54.3) | 256 (52.4) | |
| Yes | 372 (46.9) | 139 (45.7) | 233 (47.6) | |
| Surgical approach | 0.047 | |||
| Laparoscopic | 738 (93.1) | 276 (90.8) | 462 (94.5) | |
| Conventional | 55 (6.9) | 28 (9.2) | 27 (5.5) | |
| Combined resection | 0.868 | |||
| No | 684 (86.3) | 263 (86.5) | 421 (86.1) | |
| Yes | 109 (13.7) | 41 (13.5) | 68 (13.9) | |
| LN harvest | <0.001 | |||
| ≥12 | 722 (91.0) | 291 (95.7) | 431 (88.1) | |
| <12 | 71 (9.0) | 13 (4.3) | 58 (11.9) | |
| Histologic grade | <0.001 | |||
| Favor | 717 (90.4) | 247 (81.3) | 470 (96.1) | |
| Poor | 76 (9.6) | 57 (18.8) | 19 (3.9) | |
| Vascular invasion | 0.220 | |||
| No | 684 (86.3) | 268 (88.2) | 416 (85.1) | |
| Yes | 109 (13.7) | 36 (11.8) | 73 (14.9) | |
| Lymphatic invasion | 0.857 | |||
| No | 431 (54.4) | 164 (53.9) | 267 (54.6) | |
| Yes | 362 (45.6) | 140 (46.1) | 222 (45.4) | |
| Perineural invasion | 0.827 | |||
| No | 502 (63.3) | 191 (62.8) | 311 (63.6) | |
| Yes | 291 (36.7) | 113 (37.2) | 178 (36.4) | |
| Adjuvant systemic chemotherapya) | 0.075 | |||
| No | 141 (27.5) | 65 (31.9) | 76 (24.7) | |
| Yes | 371 (72.5) | 139 (68.1) | 232 (75.3) | |
| T stage | 0.408 | |||
| 1 | 33 (4.2) | 8 (2.6) | 25 (5.1) | |
| 2 | 51 (6.4) | 20 (6.6) | 31 (6.3) | |
| 3 | 558 (70.4) | 217 (71.4) | 341 (69.7) | |
| 4 | 151 (19.0) | 59 (19.4) | 92 (18.8) | |
| N stage | 0.214 | |||
| 0 | 384 (48.4) | 147 (48.4) | 237 (48.5) | |
| 1 | 241 (30.4) | 101 (33.2) | 140 (28.6) | |
| 2 | 168 (21.2) | 56 (18.4) | 112 (22.9) | |
| TNM stage | 0.880 | |||
| I | 54 (6.8) | 19 (6.3) | 35 (7.2) | |
| II | 330 (41.6) | 128 (42.1) | 202 (41.3) | |
| III | 409 (51.6) | 157 (51.6) | 252 (51.5) | |
| Recurrence | 0.760 | |||
| No | 640 (80.7) | 247 (81.3) | 393 (80.4) | |
| Yes | 153 (19.3) | 57 (18.8) | 96 (19.6) |
Values are presented as number (%).
RCC, right-sided colon cancer; LCC, left-sided colon cancer; LN, lymph node.
a)This variable was analyzed for 512 patients who had data on adjuvant chemotherapy.