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#836 Grade Increases In Gastroenteropancreatic Neuroendocrine Tumor Metastases Compared to the Primary Tumor

Introduction: The neuroendocrine tumor (NET) proliferation-based grading system (ENETS/WHO) has proved reliable for prognostic stratification of gastroenteropancreatic tumors (GEP). Although anecdotes have been published, no single study has evaluated whether grade changes between primary site and metastases.

Conference: 11th Annual ENETSConcerence (2014)

Presenting Author: Grillo F

Authors: Grillo F, Brisigotti M, Albertelli M, Borra T, Mastracci L,

Keywords: neuroendocrine, grade, Ki-67,

#584 KI-67 HETEROGENEITY IN GASTRO-ENTERO-PANCREATIC NEUROENDOCRINE TUMORS

Introduction: The neuroendocrine tumor (NET) proliferation-based grading system (ENETs/WHO) has proved reliable for prognostic stratification, however concerns exist on Ki67 heterogeneity.

Conference:

Presenting Author:

Authors: Grillo F, Albertelli M, Calamaro P, Borra T, Bruno S,

Keywords: neuroendocrine tumor, grade, heterogeneity,