Table 1: ENETS/WHO 2010 Classification Guidelines for Gastrointestinal Neuroendocrine Tumors [5].
|
Grade |
Ki-67 index |
Mitotic Count |
Differentiation |
|
1 |
≤2% |
< 2 per 10 HPF |
Well differentiated |
|
2 |
3-20 % |
2-20 per 10 HPF |
Well differentiated |
|
3 |
> 20% |
> 20 per 10 HPF |
Poorly differentiated |