Table 2.
Results of univariate analyses showing relationships among clinicopathological characteristics of specimens.
| Variables | Lymph node metastasis | Remnant of primary tumor | ||
|---|---|---|---|---|
| Subject | P value | Subject | P value | |
| Total | 4/41 (9.8%) | 6/41 (14.6%) | ||
|
| ||||
| Sex | 0.729 | 0.386 | ||
| Male | 4/38 (10.5%) | 5/38 (13.2%) | ||
| Female | 0/3 | 1/3 (33.3%) | ||
| Age (years) | 0.488 | 0.566 | ||
| ≤70 | 3/25 (12.0%) | 4/25 (16.0%) | ||
| >70 | 1/16 (6.3%) | 2/16 (12.5%) | ||
| Endoscopic treatment | 0.355 | 0.015* | ||
| Mucosal resection | 0/9 | 4/9 (44.4%) | ||
| Submucosal dissection | 4/32 (12.5%) | 2/32 (6.3%) | ||
| Tumor size (mm) | 0.445 | 0.488 | ||
| ≤20 | 3/24 (12.5%) | 3/24 (12.5%) | ||
| >20 | 1/17 (5.9%) | 3/17 (17.6%) | ||
| Depth of tumor invasion† | 0.404 | 0.077 | ||
| pT1a–1b1 | 0/8 | 3/8 (37.5%) | ||
| pT1b2 | 4/33 (12.1%) | 3/33 (9.1%) | ||
| Macrotype | 0.156 | 0.566 | ||
| Elevated | 3/16 (18.8%) | 2/16 (12.5%) | ||
| Depressed | 1/25 (4.0%) | 4/25 (16.0%) | ||
| Intratumoral ulceration or ulcer scar | 0.582 | 0.852 | ||
| No | 4/36 (11.1%) | 5/36 (13.9%) | ||
| Yes | 0/5 | 1/5 (20.0%) | ||
| Main histologic type‡ | 0.517 | 0.639 | ||
| Differentiated | 4/35 (11.4%) | 5/35 (14.3%) | ||
| Undifferentiated | 0/6 | 1/6 (16.7%) | ||
| Undifferentiated component‡ | 0.578 | 0.672 | ||
| No | 3/27 (11.1%) | 4/27 (14.8%) | ||
| Yes | 1/14 (7.1%) | 2/14 (14.3%) | ||
| Lymphatic invasion | 0.284 | 0.307 | ||
| L0 | 1/21 (4.8%) | 2/21 (9.5%) | ||
| L1 | 3/20 (15.0%) | 4/20 (20.0%) | ||
| Venous invasion | 0.030* | 0.157 | ||
| V0 | 0/23 | 5/23 (21.7%) | ||
| V1 | 4/18 (22.2%) | 1/18 (5.6%) | ||
| Horizontal margin† | 0.582 | 0.001** | ||
| HM0 or HMX | 4/37 (10.8%) | 3/37 (8.1%) | ||
| HM1 | 0/4 | 3/4 (75.0%) | ||
| Vertical margin† | 0.047* | 0.228 | ||
| VM0 or VMX | 2/27 (7.4%) | 2/27 (7.4%) | ||
| VM1 | 2/14 (14.3%) | 4/14 (28.6%) | ||
*P < 0.05, **P < 0.01.
†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.