Brief Article
Copyright ©2011 Baishideng Publishing Group Co.
World J Gastroenterol. Sep 21, 2011; 17(35): 4007-4012
Published online Sep 21, 2011. doi: 10.3748/wjg.v17.i35.4007
Table 1 Case characteristics n (%)
D1D2P value
Gender
M61 (63.5)71 (59.2)0.512
F35 (36.5)49 (40.8)
Age (yr)
< 7070 (72.9)86 (71.7)0.142
≥ 7026 (27.1)34 (28.3)
Surgical Procedure
TG79 (82.3)55 (45.8)0.001
DSG17 (17.7)65 (54.2)
Anatomical localization of primary tumor
Proximal9 (9.4)9 (7.5)0.087
Middle39 (40.6)43 (35.8)
Distal33 (34.4)59 (49.2)
Diffuse15 (15.6)9 (7.5)
Number of lymph nodes removed (mean ± SD)14.4 ± 6.123.5 ± 9.30.022
Number of metastatic lymph nodes (mean ± SD)3.8 ± 2.26.1 ± 4.60.034
T (Depth of invasion)
T18 (8.3)9 (7.5)0.056
T29 (9.4)15 (12.5)
T359 (61.5)75 (62.5)
T420 (20.8)21 (17.5)
N (According to AJCC)
020 (20.8)26 (21.7)0.296
132 (33.3)47 (39.2)
240 (41.7)37 (30.8)
34 (4.2)10 (8.3)
TNM stage
IA2 (2.1)6 (5.0)0.001
IB12 (12.5)7 (5.8)
II19 (19.8)30 (25)
IIIA42 (43.8)58 (48.3)
IIIB21 (21.9)19 (15.8)
V--
Pathology
Adenocarcinoma77 (80.2)97 80.8)NA
Signet ring cell4 (4.2)18 (15.0)
MAC10 (10.4)2 (1.7)
Carcinoid tumor2 (2.1)-
Lymphoma3 (3.1)3 (2.5)
N ratio
012 (12.5)19 (15.8)0.001
129 (30.2)34 (28.3)
239 (40.6.)23 (19.2)
316 (16.7)44 (36.7)
Lauren classification
Diffuse47 (49.0)52 (53.3)0.424
Intestinal49 (51.0)68 (56.7)
Table 2 Comparison of 5 year survivals in dissection 1 and dissection 2 dissection groups depending on N and N ratio n (%)
NDn5 YSP valueN ration5 YSP value
N0D1206 (30.0%)0.1720206 (30.0%)0.389
D22613 (50.0%)2613 (50.0%)
N1D1324 (12.5%)0.0471294 (13.8%)0.070
D24715 (31.9%)4413 (29.5%)
N2D1406 (15.0%)0.0442395 (12.8%)0.192
D2371 (2.7%)323 (9.4%)
N3D14NANA3161 (6.3%)0.267
D210NA440
Table 3 Node ratios vs node classes n (%)
N ratio (metastatic/total number of lymph nodes removed)
0(0)1(0-9)2(10-25)3(> 25)Total
D1 group
N0 (0)20 (100)20
N1 (1-6)21 (65.6)11 (34.4)32
N2 (7-15)28 (70.0)12 (30.0)40
N3 (> 15)4 (100)4
D2 group
N0 (0)26 (100)26
N1 (1-6)37 (78.7)6 (12.8)4 (8.5)47
N2 (7-15)26 (70.3)11 (29.7)37
N3 (> 15)10 (100)10