Table 5 Clinicopathological characteristics of the lesions according to the clarity of the endoscopic image after chromoendoscopy with indigo carmine dye added to acetic acid
| Â | Endoscopic image after chromoendoscopy | P value | ||
|---|---|---|---|---|
| Â | Clear (n = 83) | Mottled (n = 32) | Unclear (n = 36) | Â |
Tumor size | Â | Â | Â | 0.381 |
   ≤ 2 cm | 50 | 17 | 25 |  |
   > 2 cm | 33 | 15 | 11 |  |
Location | Â | Â | Â | 0.140 |
   Upper third of the stomach | 7 | 3 | 1 |  |
   Middle third of the stomach | 29 | 18 | 13 |  |
   Lower third of the stomach | 47 | 11 | 22 |  |
Macroscopic type | Â | Â | Â | 0.009 |
   Flat/Elevated | 45 | 8 | 11 |  |
   Depressed | 30 | 15 | 19 |  |
   Excavated | 8 | 9 | 6 |  |
Histopathological diagnosis | Â | Â | Â | 0.002 |
   Differentiated | 77 | 2 | 29 |  |
   Undifferentiated | 6 | 30 | 7 |  |
Depth | Â | Â | Â | 0.222 |
   Mucosal | 63 | 19 | 26 |  |
   Submucosal | 17 | 13 | 9 |  |
   Advanced | 3 | 0 | 1 |  |