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Copyright ©2008 The WJG Press and Baishideng.
World J Gastroenterol. Nov 21, 2008; 14(43): 6726-6732
Published online Nov 21, 2008. doi: 10.3748/wjg.14.6726
Table 1 Baseline and tumor characteristics of the patients in each group
CharacteristicGroup A (n = 265)Group B (n = 72)
Gender (M/F) (%)189 (71.3)/76 (28.7)51 (70.8)/21 (29.2)
Mean age (yr)62.4 ± 9.563.3 ± 9.3
Size of specimen (cm)4.27 ± 1.264.29 ± 1.48
Pathologic report, n (%)
TALG51 (19.2)10 (13.9)
TAHG/CIS30 (11.3)9 (12.5)
Adenocarcinoma WD96 (36.2)24 (33.3)
Adenocarcinoma MD64 (24.2)19 (26.4)
Adenocarcinoma PD15 (5.7)7 (9.7)
Signet ring cell type8 (3.0)3 (4.2)
Other tumor11 (0.4)0
Table 2 Clinical aspects of gastric cancer in the two groups n (%)
Clinical aspectGroup A (n = 210)Group B (n = 53)
Tumor depth
Mucosal layer175 (83.3) 43 (81.1)
Submucosal layer35 (16.7)10 (18.9)
Endoscopic appearance
Protruded/Elevated77 (36.7)21 (39.6)
Flat17 (8.1)4 (7.5)
Depressed59 (28.1)19 (35.8)
Mixed57 (27.1)9 (17.1)
Tumor location
Cardia, Fundus11 (5.2)4 (7.5)
Body54 (25.7)15 (28.3)
Angle29 (13.8)12 (22.6)
Antrum, Pylorus115 (54.8)21 (39.6)
Subtotal gastrectomy state1 (0.5)1 (1.9)
Table 3 Comparison of procedure time and lesions in the two groups n (%)
Group A (n = 265)Group B (n = 72)P
Procedure time (min)59.63 ± 56.1276.65 ± 70.750.043
FibrosisNS
Yes42 (15.8)11 (15.3)
No223 (84.2)61 (84.7)
Specimen sizeNS
< 3 cm26 (9.8)7 (9.7)
3 to < 5 cm177 (66.8)42 (65.3)
≥ 5 cm62 (23.4) 18 (25)
Ulcer lesion0.041
Yes36 (13.6)5 (6.9)
No229 (86.4)67 (93.1)
Table 4 Resection type and complication rates in the two groups n (%)
Group A (n = 265)Group B (n = 72)
Resection
En bloc254 (95.8)67 (93.1)
Piecemeal11 (4.2)5 (6.9)
Complication
None250 (94.3)70 (97.2)
Bleeding13 (4.9)1 (1.4)
Perforation2 (0.8)1 (1.4)
Table 5 Comparison of ESD in the two groups n (%)
ESDGroup A (n = 265)Group B (n = 72)
Complete215 (81.1)  53 (73.6)
Incomplete47 (17.7)18 (25)
Could not be evaluated3 (1.1)1 (1.4)