Table 1 Clinicopathologic characteristics between negative and positive LN metastasis groups
Variables | Negative LNM group [n = 343 (%)] | Positive LNM group [n = 36 (%)] | P value |
|---|---|---|---|
Age (mean ± SD) (year) | 58.5 ± 11.1 | 58.5 ± 14.2 | 0.995 |
Sex | 0.08 | ||
Male | 250 (72.9) | 21 (58.3) | |
Female | 93 (27.1) | 15 (41.7) | |
BMI | 24.1 ± 2.8 | 23.7 ± 3.2 | 0.363 |
ASA | 0.459 | ||
1 | 127 (37.1) | 11 (30.6) | |
2 | 193 (56.4) | 24 (66.7) | |
3 | 22 (6.4) | 1 (2.8) | |
Approach | 0.132 | ||
Open | 153 (44.6) | 22 (61.1) | |
Laparoscopic | 166 (48.4) | 13 (36.1) | |
Robot | 24 (7.0) | 1 (2.8) | |
Extent of gastrectomy | 0.826 | ||
Total | 277 (80.8) | 30 (83.3) | |
Proximal | 66 (19.2) | 6 (16.7) | |
Tumor size (mean ± SD) (cm) | 3.5 ± 1.6 | 3.7 ± 2.0 | 0.549 |
Tumor size | 0.861 | ||
≤ 3 cm | 154 (44.9) | 17 (47.2) | |
> 3 cm | 189 (55.1) | 19 (52.8) | |
Histology | 0.152 | ||
Differentiated | 134 (39.1) | 19 (52.8) | |
Undifferentiated | 209 (60.9) | 17 (47.2) | |
Depth of invasion | 0.011 | ||
Mucosa | 87 (25.4) | 2 (5.6) | |
SM1 (< 500 μm) | 35 (10.2) | 2 (5.6) | |
SM2 (≥ 500 μm) | 221 (64.4) | 32 (88.9) | |
Ulcer | 0.507 | ||
Absent | 275 (80.2) | 31 (86.1) | |
Present | 68 (19.5) | 5 (13.9) | |
LVI | < 0.001 | ||
Absent | 300 (87.5) | 17 (47.2) | |
Present | 43 (12.5) | 19 (52.8) | |