Brief Article
Copyright ©2012 Baishideng Publishing Group Co.
World J Gastroenterol. Jul 21, 2012; 18(27): 3610-3616
Published online Jul 21, 2012. doi: 10.3748/wjg.v18.i27.3610
Table 1 Clinicopatholgical factors according to lymphatic and/or blood vessel invasion n (%)
Clinicopathological factorsTumor without lymphovascular invasionTumor with lymphovascular invasionP value
Patients314122
Age (yr)58.95 ± 11.8858.84 ± 10.660.927
Sex
Male235 (74.8)85 (69.7)0.279
Female79 (25.2)37 (30.3)
Tumor location
Upper110 (35.0)42 (34.4)0.733
Middle57 (18.2)20 (16.4)
Lower140 (44.6)55 (45.1)
Whole7 (2.2)5 (4.1)
Resection type
Subtotal236 (75.2)87 (71.3)0.465
Total78 (24.835 (28.7)
Tumor size (cm)
< 5 cm206 (65.6)82 (67.2)0.822
≥ 5 cm108 (34.4)40 (32.8)
Histological type
Differentiated123 (39.2)54 (44.3)0.331
Undifferentiated191 (60.8)68 (55.7)
No. of retrieved LNs21.5 ± 5.522.3 ± 7.00.248
LN
Positive96 (30.6)51 (41.8)0.032
Negtive218 (69.4)71 (58.2)
Stage< 0.001
IIa264 (84.1)70 (57.4)
IIb50 (15.9)52 (42.6)
Survival at 5 yr (%)39.654.80.006
Table 2 Patient and tumor characteristics of Groups I-IV (n = 436) n (%)
Group I (LBVI-/LN-)Group II (LBVI+/LN-)Group III (LBVI-/LN+)Group IV (LBVI+/LN+)P value
Patients218519671
Age (yr)59.7 ± 11.559.4 ± 9.157.3 ± 12.658.4 ± 11.70.367
Male:female3.361.682.312.940.160
Tumor location
Upper79 (36.2)17 (33.3)31 (32.3)25 (35.2)0.959
Middle39 (17.9)8 (15.7)18 (18.8)12 (16.9)
Lower96 (44.0)23 (45.1)44 (45.8)32 (45.1)
Whole4 (1.8)3 (5.9)3 (3.1)2 (2.8)
Tumor size
≤ 5 cm141 (64.7)35 (68.6)65 (67.7)47 (66.2)0.929
> 5 cm77 (35.3)16 (31.4)31 (32.3)24 (33.8)
No. of retrieved LNs21.2 ± 5.722.1 ± 8.022.0 ± 5.022.45 ± 6.20.413
Histological type
Differentiated85 (39.0)22 (43.1)38 (39.6)32 (45.1)0.801
Undifferentiated133 (61.0)29 (56.9)58 (60.4)39 (59.4)
Resection type
Subtotal167 (76.6)33 (64.7)69 (71.9)54 (76.1)0.328
Total51 (23.4)18 (35.3)27 (28.1)17 (23.9)
5-year overall survival (%)58.845.845.736.90.009