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Copyright ©The Author(s) 2020.
World J Gastrointest Oncol. Aug 15, 2020; 12(8): 850-856
Published online Aug 15, 2020. doi: 10.4251/wjgo.v12.i8.850
Table 2 Classification of gastroenteropancreatic neuroendocrine tumors: Neuroendocrine neoplasms according to the World Health Organization 2019
TerminologyDifferentiationGradeMitotic rateKi 67 index, %
NET, G1Well differentiatedLow< 2< 3
NET, G2Well differentiatedIntermediate2-203-20
NET, G3Well differentiatedHigh> 20> 20
NEC, SCNECPoorly differentiatedHigh> 20> 20
NEC, LCNECPoorly differentiatedHigh> 20> 20
MiNENWell or poorly differentiatedVariableVariableVariable