Copyright
©The Author(s) 2020.
World J Gastrointest Oncol. Aug 15, 2020; 12(8): 791-807
Published online Aug 15, 2020. doi: 10.4251/wjgo.v12.i8.791
Published online Aug 15, 2020. doi: 10.4251/wjgo.v12.i8.791
Table 1 World Health Organization classification of gastrointestinal neuroendocrine tumors
| Well-differentiated neuroendocrine neoplasms (NENs) | |||
| Ki-67 index (%) | Mitotic index/10 HPF | ||
| NET grade 1 (G1) | < 3 | < 2 | |
| NET grade 2 (G2) | 3-20 | 2-20 | |
| NET grade 3 (G3) | > 20 | > 20 | |
| Poorly differentiated neuroendocrine neoplasms (NENs) | |||
| Ki-67 index (%) | Mitotic index/10 HPF | ||
| NEC grade 3 | >20 | >20 | |
| -Small cell type | |||
| -Large cell type | |||
| Mixed neuroendocrine neoplasms (MiNEN) | |||
| Source: Adapted from WHO Classification of Tumors of Endocrine Organs, Fourth edition (2017)[14] | |||
- Citation: Ahmed M. Gastrointestinal neuroendocrine tumors in 2020. World J Gastrointest Oncol 2020; 12(8): 791-807
- URL: https://www.wjgnet.com/1948-5204/full/v12/i8/791.htm
- DOI: https://dx.doi.org/10.4251/wjgo.v12.i8.791