1.
Case characteristics
Clinicopathological features | LVI [n (%)] | χ2 | P | |
Absent | Present | |||
LVI, lymphovascular infiltration; CA19-9, carbohydrate antigen; CEA, carcinoembryonic antigen. | ||||
Sex | 1.273 | 0.253 | ||
Male | 555 (70.9) | 150 (67.0) | ||
Female | 228 (29.1) | 74 (33.0) | ||
Age at surgery (year) | 0.002 | 0.966 | ||
<70 | 679 (86.7) | 194 (86.6) | ||
≥70 | 104 (13.3) | 30 (13.4) | ||
Tumor location | 11.980 | 0.007 | ||
Lower | 337 (43.0) | 72 (32.1) | ||
Middle | 185 (23.6) | 57 (25.4) | ||
Upper | 128 (16.3) | 38 (17.0) | ||
2/3 or more | 133 (17.0) | 57 (25.4) | ||
Borrmann type | 38.338 | <0.001 | ||
0 | 149 (19.0) | 8 (3.6) | ||
I | 38 (4.9) | 7 (3.1) | ||
II | 78 (10.0) | 19 (8.5) | ||
III | 475 (60.7) | 169 (75.4) | ||
IV | 43 (5.5) | 21 (9.4) | ||
Tumor size (cm) | 19.882 | <0.001 | ||
<5 | 450 (57.5) | 91 (40.6) | ||
≥5 | 333 (42.5) | 133 (59.4) | ||
Histology | 7.175 | 0.007 | ||
Differentiated | 143 (18.3) | 24 (10.7) | ||
Undifferentiated | 640 (81.7) | 200 (89.3) | ||
Depth of invasion | 46.846 | <0.001 | ||
T1a | 91 (11.6) | 3 (1.3) | ||
T1b | 61 (7.8) | 5 (2.2) | ||
T2 | 101 (12.9) | 17 (7.6) | ||
T3 | 31 (4.0) | 6 (2.7) | ||
T4a | 475 (60.7) | 180 (80.4) | ||
T4b | 24 (3.1) | 13 (5.8) | ||
Lymph node metastasis | 89.659 | <0.001 | ||
N0 | 407 (52.0) | 52 (23.2) | ||
N1 | 138 (17.6) | 34 (15.2) | ||
N2 | 120 (15.3) | 54 (24.1) | ||
N3a | 89 (11.4) | 52 (23.2) | ||
N3b | 29 (3.7) | 32 (14.3) | ||
TNM stage | 91.709 | <0.001 | ||
I | 217 (27.7) | 14 (6.3) | ||
II | 230 (29.4) | 51 (22.8) | ||
IIIa | 210 (26.8) | 72 (32.1) | ||
IIIb | 94 (12.0) | 50 (22.3) | ||
IIIc | 32 (4.1) | 37 (16.5) | ||
Extronodal tumor deposits | 32.715 | <0.001 | ||
Absent | 585 (74.7) | 123 (54.9) | ||
Preset | 198 (25.3) | 101 (45.1) | ||
Preoperative CA19-9 levels | 2.099 | 0.147 | ||
Normal | 680 (86.8) | 186 (83.0) | ||
Elevated | 103 (13.2) | 38 (17.0) | ||
Preoperative CEA levels | 9.007 | 0.003 | ||
Normal | 682 (87.1) | 177 (79.0) | ||
Elevated | 101 (12.9) | 47 (21.0) |