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. 2019 Oct;31(5):785–796. doi: 10.21147/j.issn.1000-9604.2019.05.08

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)