Outline and comparison of the Vienna classification and inflammatory bowel disease (IBD) dysplasia morphology study group classification of dysplasia in IBD
| Vienna | IBD study group |
|---|---|
| *Not described by the IBD study group. | |
| Negative for neoplasia/dysplasia | Negative for dysplasia |
| Indefinite for neoplasia/dysplasia | Indefinite for dysplasia |
| Non-invasive low-grade neoplasia (low-grade adenoma/dysplasia) | Low-grade dysplasia |
| Non-invasive high-grade neoplasia | High-grade dysplasia |
| High-grade adenoma/dysplasia | |
| Non-invasive carcinoma (carcinoma in situ) | |
| Suspicious of invasive carcinoma | |
| Invasive neoplasia | Adenocarcinoma* |
| Intramucosal adenocarcinoma | Intramucosal |
| Submucosal carcinoma or beyond | Invasive |