Table 1.
Clinical characteristics in the initially detected and false-negative EGCs.
| Initially detected EGCs (n = 100) | False-negative EGCs (n = 119) | P value | |||
|---|---|---|---|---|---|
| Age (years) | 71 | [61–79] | 72 | [63–79] | 0.61 |
| Men | 73 | (73.0%) | 86 | (72.3%) | 0.90 |
| Previous ESD/EMR | 1 | (1.0%) | 34 | (28.6%) | <0.01 |
| Symptomatic | 30 | (30.0%) | 12 | (10.1%) | <0.01 |
| Atrophic gastritis | 0.38 | ||||
| Opened type | 87 | (87.0%) | 108 | (90.8%) | |
| None or closed type | 13 | (13.0%) | 11 | (9.2%) | |
| Helicobacter pylori status | <0.01 | ||||
| Currently infected | 75 | (75.0%) | 50 | (42.0%) | |
| Past infected | 18 | (18.0%) | 64 | (53.8%) | |
| Uninfected | 7 | (7.0%) | 5 | (4.2%) | |
| Endoscopist | 0.59 | ||||
| Experienced | 69 | (69.0%) | 86 | (72.3%) | |
| Trainee | 31 | (31.0%) | 33 | (27.7%) | |
| Purpose | <0.01 | ||||
| Screening | 78 | (78.0%) | 43 | (36.1%) | |
| Surveillance | 1 | (1.0%) | 37 | (31.1%) | |
| Annual medical checkup | 21 | (21.0%) | 39 | (32.8%) | |
| Tumor size (mm) | 15 | [9–23] | 9 | [5–13] | <0.01 |
| Depth | 0.09 | ||||
| M | 90 | (90.0%) | 115 | (96.6%) | |
| sm1 | 2 | (2.0%) | 0 | (0%) | |
| sm2 or deeper | 8 | (8.0%) | 4 | (3.4%) | |
| Pathological differentiation | 0.19 | ||||
| Well or moderate | 83 | (83.0%) | 106 | (89.1%) | |
| Poorly | 17 | (17.0%) | 13 | (10.9%) | |
| Location | 0.82 | ||||
| Upper | 13 | (13.0%) | 19 | (16.0%) | |
| Middle | 33 | (33.0%) | 37 | (31.1%) | |
| Lower | 54 | (54.0%) | 63 | (52.9%) | |
| Circumference | 0.51 | ||||
| Anterior wall | 23 | (23.0%) | 22 | (18.5%) | |
| Posterior wall | 25 | (25.0%) | 40 | (33.6%) | |
| Lesser curvature | 35 | (35.0%) | 36 | (30.3%) | |
| Greater curvature | 17 | (17.0%) | 21 | (17.7%) | |
| Color | <0.01 | ||||
| Reddish | 55 | (55.0%) | 71 | (59.7%) | |
| Discolored | 40 | (40.0%) | 29 | (24.4%) | |
| Normal | 5 | (5.0%) | 19 | (16.0%) | |
| Tumor morphology | 0.33 | ||||
| Elevated | 33 | (33.0%) | 29 | (24.4%) | |
| Flat | 9 | (9.0%) | 11 | (9.2%) | |
| Depressed | 57 | (58.0%) | 79 | (66.4%) | |
| Erosion | 0.86 | ||||
| Present | 45 | (45.0%) | 55 | (46.2%) | |
| Absent | 55 | (55.0%) | 64 | (53.8%) | |
| Gastritis-like appearance | <0.01 | ||||
| Present | 15 | (15.0%) | 42 | (35.3%) | |
| Absent | 85 | (85.0%) | 77 | (64.7%) | |
| Spontaneous bleeding | 0.72 | ||||
| Present | 16 | (16.0%) | 17 | (14.3%) | |
| Absent | 84 | (84.0%) | 102 | (85.7%) | |
Data are presented as median (IQR) or n (%). EGC: early gastric cancer; ESD: endoscopic submucosal dissection; EMR: endoscopic mucosal resection.