Table 1.
Comparison of endoscopic features between the high microsatellite instability and non-high microsatellite instability early gastric cancer groups n (%)
| Endoscopic findings | MSI-H EGC (n = 73) | Non-MSI-H EGC(n = 146) | P value |
| Main gross type | < 0.001 | ||
| Type I | 21 (28.8) | 16 (11.0) | |
| Type IIa | 23 (31.5) | 22 (15.1) | |
| Type IIb | 13 (17.8) | 48 (32.9) | |
| Type IIc | 9 (12.3) | 51 (34.9) | |
| Type III | 7 (9.6) | 9 (6.2) | |
| Location | < 0.001 | ||
| Antrum | 56 (76.7) | 66 (45.2) | |
| Body | 15 (20.5) | 77 (52.7) | |
| Cardia | 2 (2.7) | 3 (2.1) | |
| Color | 0.117 | ||
| Whitish color | 2 (2.7) | 9 (6.2) | |
| Normal mucosal color | 27 (37.0) | 36 (24.7) | |
| Erythematous color | 44 (60.3) | 101 (69.2) | |
| Demarcation | 0.265 | ||
| Definite | 45 (61.6) | 101 (69.2) | |
| Obscure | 28 (38.4) | 45 (30.8) | |
| Intestinal metaplasia | 0.138 | ||
| Absent-to-mild | 41 (56.2) | 97 (66.4) | |
| Moderate-to-severe | 32 (43.8) | 49 (33.6) | |
| Mucosal atrophy | 0.032 | ||
| Absent-to-mild | 22 (30.1) | 66 (45.2) | |
| Moderate-to-severe | 51 (69.9) | 80 (54.8) | |
| Synchronous lesion | 14 (19.2) | 12 (8.2) | 0.018 |
MSI-H: High microsatellite instability; EGC: Early gastric cancer.