Table 1 Comparison of clinicopathological characteristics according to the number of LNM risk factors in patients whose tumors did not meet the criteria for endoscopic resection
n | Total number of items | p value | ||||
|---|---|---|---|---|---|---|
0/1 | 2 | 3 | 4 | |||
Total | 861 | 396 | 305 | 124 | 36 | |
Age, mean ± SD (years) | 65.77 (11.06) | 64.69 (11.36) | 66.14 (10.72) | 68.01 (10.84) | 66.72 (10.30) | 0.024 |
Sex, n (%) | ||||||
Male | 579 (67.2) | 253 (63.9) | 220 (72.1) | 85 (68.5) | 21 (58.3) | 0.081 |
Female | 282 (32.8) | 143 (36.1) | 85 (27.9) | 39 (31.5) | 15 (41.7) | |
Tumor size, mean ± SD (mm) | 34.47 (20.54) | 28.71 (17.78) | 35.14 (20.35) | 45.47 (19.54) | 54.31 (25.37) | < 0.001 |
Depth of tumor, n (%) | ||||||
M | 317 (36.8) | 237 (59.8) | 78 (25.6) | 2 (1.6) | 0 (0) | < 0.001 |
SM1 | 144 (16.7) | 118 (29.8) | 17 (5.6) | 9 (7.3) | 0 (0) | |
SM2 | 400 (46.5) | 41 (10.4) | 210 (68.9) | 113 (91.1) | 36 (100) | |
Histological type, n (%) | ||||||
Differentiated | 359 (41.7) | 169 (42.7) | 142 (46.6) | 48 (38.7) | 0 (0) | < 0.001 |
Undifferentiated | 502 (58.3) | 227 (57.3) | 163 (53.4) | 76 (61.3) | 36 (100) | |
Lymphatic invasion, n (%) | ||||||
Negative | 605 (70.3) | 365 (92.2) | 196 (64.3) | 41 (33.1) | 3 (8.3) | < 0.001 |
Positive | 256 (29.7) | 31 (7.8) | 109 (35.7) | 83 (66.9) | 33 (91.7) | |
Venous invasion, n (%) | ||||||
Negative | 706 (82.0) | 385 (97.2) | 227 (74.4) | 71 (57.3) | 23 (63.9) | < 0.001 |
Positive | 155 (18.0) | 11 (2.8) | 78 (25.6) | 53 (42.7) | 13 (36.1) | |
Ulceration (scar), n (%) | ||||||
Negative | 196 (22.8) | 104 (26.3) | 72 (23.6) | 20 (16.1) | 0 (0) | 0.001 |
Positive | 665 (77.2) | 292 (73.7) | 233 (76.4) | 104 (83.9) | 36 (100) | |
Preoperative ERM/ESD, n (%) | ||||||
Negative | 743 (86.3) | 337 (85.1) | 256 (83.9) | 114 (91.9) | 36 (100) | 0.012 |
Positive | 118 (13.7) | 59 (14.9) | 49 (16.1) | 10 (8.1) | 0 (0) | |