Abstract Library

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#1666 Prognosis and Incidence in Pancreatic and Gastrointestinal Neuroendocrine Neoplasms with Emphasis on “NET G3”: An Analysis of 198 Cases from Japan

Introduction: Prognostic impact of well differentiated pancreatic neuroendocrine neoplasms (PanNENs) with a Ki67 >20%, provisionally called NET G3, needs to be validated and compared to poorly differentiated neuroendocrine carcinomas (NECs). Moreover, the frequency of NET G3 among gastrointestinal NENs (GI-NENs) has so far not been studied.

Conference: 14th Annual ENETSConcerence (2017)

Presenting Author: Kasajima A

Authors: Kasajima A, Tachibana T, Ishida H, Yazdani S, Konukiewitz B,

Keywords: NET G3, GEP-NEN, GI-NET,

#1286 A Comparative Analysis of Ki67 Index of the High Grade Neuroendocrine Neoplasms Arising in the Gastrointestinal Tract and the Pancreas

Introduction: A common classification has been used for NET in gastrointestinal tract (GI-NET) and pancreas (P-NET), but heterogeneity has been reported in high grade tumors; well-differentiated G3 (WDG3), poorly differentiated NEC (NEC), and mixed adenoneuroendocrine carcinoma (MANEC).

Conference: 13th Annual ENETSConcerence (2016)

Presenting Author:

Authors: Kasajima A, Ishida H, Tachibana T, Yazdani S, Sasano H,

Keywords: high grade tumors, morphological differentiation, ki-67 index,