Table 2 Border clarification of the lesions before and after chromoendoscopy with indigo carmine dye added to acetic acid
| Â | After chromoendoscopy | |||||
|---|---|---|---|---|---|---|
| Â | Total (n = 151) | Differentiated adenocarcinomas (n = 108) | Undifferentiated adenocarcinomas (n = 43) | |||
| Â | Distinct margin | Indistinct margin | Distinct margin | Indistinct margin | Distinct margin | Indistinct margin |
Conventional endoscopy | Â | Â | Â | Â | Â | Â |
   Distinct margin | 94 | 7 | 70 | 4 | 24 | 3 |
   Indistinct margin | 33 | 17 | 27 | 7 | 6 | 10 |