Evidence Review
Copyright ©The Author(s) 2025.
World J Gastrointest Pathophysiol. Jun 22, 2025; 16(2): 107265
Published online Jun 22, 2025. doi: 10.4291/wjgp.v16.i2.107265
Table 1 Classification of pancreatic neuroendocrine tumors, modified from World Health Organisation Classification of Neuroendocrine Neoplasms[20]
Terminology
WHO grade
Differentiation
Mitotic rate
Ki-67 index
NETG1Well-differentiated NET< 2/2 mm²< 3%
G22-20/2 mm²3%-20%
G3> 20%/2 mm²> 20%
Small cell NECHigh gradePoorly differentiated NEC> 20/2 mm²> 70%
Large cell NECHigh grade