Table 2: Results of univariate analyses showing relationships among clinicopathological characteristics of specimens.

VariablesLymph node metastasisRemnant of primary tumor
Subject valueSubject value

Total4/41 (9.8%)6/41 (14.6%)

Sex0.7290.386
 Male4/38 (10.5%)5/38 (13.2%)
 Female0/31/3 (33.3%)
Age (years)0.4880.566
 ≤703/25 (12.0%)4/25 (16.0%)
 >701/16 (6.3%)2/16 (12.5%)
Endoscopic treatment0.3550.015*
 Mucosal resection0/94/9 (44.4%)
 Submucosal dissection4/32 (12.5%)2/32 (6.3%)
Tumor size (mm)0.4450.488
 ≤203/24 (12.5%)3/24 (12.5%)
 >201/17 (5.9%)3/17 (17.6%)
Depth of tumor invasion0.4040.077
 pT1a–1b10/83/8 (37.5%)
 pT1b24/33 (12.1%)3/33 (9.1%)
Macrotype0.1560.566
 Elevated3/16 (18.8%)2/16 (12.5%)
 Depressed1/25 (4.0%)4/25 (16.0%)
Intratumoral ulceration or ulcer scar0.5820.852
 No4/36 (11.1%)5/36 (13.9%)
 Yes0/51/5 (20.0%)
Main histologic type0.5170.639
 Differentiated4/35 (11.4%)5/35 (14.3%)
 Undifferentiated0/61/6 (16.7%)
Undifferentiated component0.5780.672
 No3/27 (11.1%)4/27 (14.8%)
 Yes1/14 (7.1%)2/14 (14.3%)
Lymphatic invasion0.2840.307
 L01/21 (4.8%)2/21 (9.5%)
 L13/20 (15.0%)4/20 (20.0%)
Venous invasion0.030*0.157
 V00/235/23 (21.7%)
 V14/18 (22.2%)1/18 (5.6%)
Horizontal margin0.5820.001**
 HM0 or HMX4/37 (10.8%)3/37 (8.1%)
 HM10/43/4 (75.0%)
Vertical margin0.047*0.228
 VM0 or VMX2/27 (7.4%)2/27 (7.4%)
 VM12/14 (14.3%)4/14 (28.6%)

, ** .
According to the third English edition of the Japanese Classification of Gastric Carcinoma.
Differentiated: well-differentiated adenocarcinoma, moderately differentiated adenocarcinoma, or papillary adenocarcinoma; undifferentiated: poorly differentiated adenocarcinoma, signet-ring cell adenocarcinoma, or mucinous adenocarcinoma.