Case Report
WHO Grade 2 Neuroendocrine Tumor in a 15-Year-Old Male: A Case Report and Literature Review
Table 2
2010 WHO classification of neuroendocrine neoplasms [
2].
| Grade | Mitotic count (per 10 high power fields) | Ki67 proliferation index |
| G1 | Less than 2 | 2% or less | G2 | 2–20 | 3–20% | G3 | Greater than 20 | Greater than 20% |
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