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#2951 Analysis of Discordance between Biopsy Grade and Surgical Pathology Grade in Resected PanNEN Patients

Introduction: In PanNEN cases, treatment strategies are decided by tumor localization, volume and grade. In unresectable or metastatic cases, tumor grade is determined by biopsy specimen obtained from EUS-FNA and diagnostic accuracy of biopsy according to WHO classification 2017 is important for decision making of treatment.

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author:

Authors: Nakano K, Masui T, Yogo A, Uchida Y, Nagai K,

Keywords: PanNEN, WHO classification 2017, EUS-FNA, Ki-67, biopsy, surgical pathology, discordance,

#2831 Immunohistochemical Profile of Digestive Neuroendocrine Neoplasms: A Retrospective Analysis in a Single Algerian Institution

Introduction: Neuroendocrine Noplasms (NEN) are rare tumours, but their incidence is clearly increasing in our country due to the improvement of diagnostic means, in particular the generalization of immunohistochemical techniques. The digestive location represents more than 70% of the cases. The anatomopathological study enables to classify the NEN in different prognostic grades according to the degree of differentiation, mitotic index and Ki67.

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author: Belabdi D

Authors: Belabdi D, Mekarnia A, Ouzit S, Ainouche A, Oukkal M,

Keywords: Digestive neuroendocrine neoplasm, immunohistochemical profil, WHO classification 2017,