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©The Author(s) 2023.
World J Gastrointest Surg. Apr 27, 2023; 15(4): 566-577
Published online Apr 27, 2023. doi: 10.4240/wjgs.v15.i4.566
Published online Apr 27, 2023. doi: 10.4240/wjgs.v15.i4.566
Table 1 World Health Organization classification 2019 and grading criteria for neuroendocrine neoplasms of the gastrointestinal tract
| Terminology | Differentiation | Grade | Ki-67 proliferative index (%) | Mitotic index (per 10 high-power fields) |
| NET, G1 | Well-differentiated | Low | < 3 | < 2 |
| NET, G2 | Well-differentiated | Intermediate | 3-20 | 2-20 |
| NET, G3 | Well-differentiated | High | > 20 | > 20 |
| NEC, SCNEC | Poorly differentiated | High | > 20 | > 20 |
| NEC, LCNEC | Poorly differentiated | High | > 20 | > 20 |
| Mixed neuroendocrine-non-neuroendocrine neoplasm | Well or poorly differentiated | Variable | Variable | Variable |
- Citation: Kupietzky A, Dover R, Mazeh H. Surgical aspects of small intestinal neuroendocrine tumors. World J Gastrointest Surg 2023; 15(4): 566-577
- URL: https://www.wjgnet.com/1948-9366/full/v15/i4/566.htm
- DOI: https://dx.doi.org/10.4240/wjgs.v15.i4.566