Table 1.
Patients’ demographic and clinicopathologic characteristics.
| Number of LNs harvest | |||
|---|---|---|---|
| Characteristics | ≥12 (n = 142)* | <12 (n = 13)* | P value |
| LNs number† | 21.22 (9.1) | 9.00 (2.1) | <.001 |
| Age† | 64.20 (13.8) | 62.62 (13.3) | .690 |
| Sex | .374 | ||
| Male | 88 (61.97) | 6 (46.15) | |
| Female | 54 (38.03) | 7 (53.85) | |
| T stage | .649 | ||
| T4a | 126 (88.73) | 11 (84.62) | |
| T4b | 16 (11.27) | 2 (15.38) | |
| Tumor location | .734 | ||
| Colon | 108 (76.06) | 11 (84.62) | |
| Rectum | 34 (23.94) | 2 (15.38) | |
| aTumor size† (mm) | 58.90 (23.8) | 53.69 (22.9) | .450 |
| Operative urgency | .512 | ||
| Emergency | 7 (4.93) | 1 (7.69) | |
| Elective | 135 (95.07) | 12 (92.31) | |
| Operative technique | >.999 | ||
| Laparoscopic surgery | 28(19.72) | 2(15.38) | |
| Open | 114(80.28) | 11(84.62) | |
| bPre-operative CEA level† (ng/mL) | 20.40 (55.9) | 28.28 (60.1) | .631 |
| aAngiolymphatic invasion | >.999 | ||
| Positive | 23 (16.31) | 2 (15.38) | |
| Negative | 118 (83.69) | 11 (84.62) | |
| aPerineural invasion | >.999 | ||
| Positive | 20 (14.18) | 1 (7.69) | |
| Negative | 121 (85.82) | 12 (92.31) | |
| Chemotherapy | .617 | ||
| Yes | 128 (90.14) | 13 (100) | |
| No | 14 (9.86) | 0 (0) | |
| Tumor recurrent | >.999 | ||
| Yes | 24 (16.9) | 2 (15.38) | |
| No | 118 (83.1) | 11 (84.62) | |
CEA = carcinoembryonic antigen, LNs = lymph nodes.
*
With percentages in parentheses unless indicated otherwise.
†
values are means (standard deviation).
a
One data point was not mentioned in the pathologic report in the group with LNs ≥ 12.
b
Sixteen patients in the group with LNs ≥ 12 lacked information on preoperative CEA level.