Review
Copyright ©The Author(s) 2016.
World J Gastroenterol. Aug 14, 2016; 22(30): 6817-6828
Published online Aug 14, 2016. doi: 10.3748/wjg.v22.i30.6817
Table 1 Histological grading of gastrointestinal neuroendocrine neoplasms
ENETS gradingMitotic index (× 10 HPF)Ki-67 proliferation indexWHO classification 2010
G1< 2 ≤ 2%NET G1 (carcinoid)
G22-203%-20%NET G2
G3> 20> 20%NEC G3; large-cell or small-cell type