Table 1.
Baseline characteristics of gastric tumors.
| Characteristics | Value | (%) |
|---|---|---|
| Sex (females : males) | 80 : 222 (1 : 2.5) | |
| Age, years, median (range) | 73 (40–92) | |
| Morphology | ||
| Protruded (0-I) | 11 | (3.7) |
| Flat (0-II b, 0-II a) | 143 (6, 137) | (47.4) |
| Depressed (0-II a + II c, 0-IIc) | 147 (138, 9) | (48.8) |
| Submucosal tumor | 1 | (0.3) |
| Tumor size (mm), median (range) | 11 (2–60) | |
| Specimen size (mm), median (range) | 34 (14–110) | |
| Histology | ||
| Adenoma | 36 | (11.9) |
| Differentiated type | 247 | (81.8) |
| Mix type (differentiated + undifferentiated type (<20 mm)) | 12 | (4) |
| Undifferentiated type | 5 | (1.7) |
| Others∗ | 2 | (0.7) |
| Ulcer or scar | 24 | (7.9) |
| Hidden fibrosis | 35 | (11.6) |
| Much time to hemostasis | 51 | (16.9) |
| Perforation | 7 | (2.3) |
| Delayed bleeding | 9 | (3.0) |
∗Others: one case was neuroendocrine tumor and another was hyperplastic polyp.