Abstract Library

#4140 Mixed neuroendocrine and non-neuroendocrine tumors of the digestive system (MiNEN): A clinicopathological observation

Introduction: Mixed NEN-non-neuroendocrine tumor (MiNEN) is a rare tumor with limited understanding of its clinical and pathological features.

Conference:

Presenting Author: Jiajing L

Authors: Jiajing L, Weilong C, Yifan C, Yihui M,

Keywords: Mixed neuroendocrine-non-neuroendocrine neoplasm, MiNEN, Clinical Pathology,

#3120 Thinking and confusion about a well-differentiated grade 3 pancreatic neuroendocrine tumor

Introduction: In WHO Classification of Digestive System Tumors (2019 edition), pancreatic NENs are divided into well-differentiated NETs (including G1, G2, G3) and poorly differentiated NECs mainly based on the mitoses and Ki-67. G3 pNET and pNEC should have more than 20 mitoses/10 HPFs or their Ki-67 should be higher than 20%. However, WHO didn't clearly distinguish the Ki-67 cut-off value between them, and only 55% was recommended.

Conference: 18th Annual ENETS Concerence (2021)

Presenting Author: Ma Y

Authors: Ma Y, Song L, Li X, Yang M, Wang F,

Keywords: pancreatic neuroendocrine carcinoma, pancreatic neuroendocrine tumor, G3, P53, ATRX, DAXX, MEN1,

#3117 Clinicopathological observation of gastric amphicrine carcinoma

Introduction: "Amphicrine carcinoma" refers to a mixed neoplasm composed of tumor cells with both exocrine and neuroendocrine differentiation. Up to now, the understanding of this kind of neoplasms is still limited.

Conference: 18th Annual ENETS Concerence (2021)

Presenting Author:

Authors: Ma Y, Wang F, Song L, Zhao C,

Keywords: amphicrine carcinoma, neuroendocrine carcinoma, mixed neuroendocrine non-neuroendocrine neoplasm, stomach,