Table 1.
Vienna classification and Japanese classification of gastric cancer for diagnosis of gastric intraepithelial neoplasia
| Vienna classification | Japanese | Western | |
| Category 3 | Low grade adenoma/dysplasia (LGA) | Adenoma | Adenoma |
| Category 4.1 | High grade adenoma/dysplasia (HGA) | Adenoma/cancer | Adenoma |
| Category 4.2 | Non-invasive carcinoma (carcinoma in situ) | Cancer | Adenoma/cancer |
| Category 4.3 | Suspicion of invasive carcinoma | Cancer | Adenoma/cancer |
| Category 5.1 | Intramucosal carcinoma | Cancer | Adenoma/cancer |
| Category 5.2 | Submucosal carcinoma or beyond | Cancer | Cancer |