Can Ki-67 with 5.5% Be Better in Predicting Prognosis for Well Differentiated Pancreatic Neuroendocrine Tumors? Abstract #3036

Introduction: Pancreatic neuroendocrine tumors (NETs) are rare malignancies, Ki-67 is a cell proliferation marker that has been shown to have some utility in predicting prognosis of neuroendocrine tumors. However, the ideal grading method for G1/G2 remains controversial.
Aim(s): To study ki67 index in the role of predicting prognosis for patients(pts) with G1/G2 Pancreatic NETs.
Materials and methods: This was a retrospective study, the enrolled pts with grades G1 and G2 pancreatic NETs diagnosed at China-Japan Friendship Hospital from January 2012 to June 2018 were included. The follow-up deadline was June 2019. The diagnosis was based on the 2017 WHO endocrine organ tumor classification. The consensus of tumor pathological diagnosis was analyzed by SPSS 23.0 statistical software, cut-off value was calculated by ROC curve, and Kaplan-Meier method was used for univariate analysis to compare overall survival time.
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Pathology - grading, staging
Presenting Author: Prof. Huang-Ying Tan

To read results and conclusion, please login ...

Further abstracts you may be interested in

#31 Patterns and predictors of failure after curative resections of pancreatic endocrine carcinoma
Introduction: Pancreatic endocrine carcinomas (PECs) are generally associated with a good prognosis, above all after radical resection. In other pancreatic malignancies, predictors of failure and the role of lymph node ratio (LNR) are well-known, but prognostic factors and the value of LNR, as well as patterns of recurrence after surgery for PEC has never been investigated.
Conference: 7th Annual ENETS Conference (2010)
Category: Clinical
Presenting Author: Dr Massimo Falconi
#90 The prognostic value of FDG-PET scan in neuroendocrine tumors: a retrospective analysis of 46 patients treated in one center
Introduction: Neuroendocrine tumors (NETs) are rare and generally indolent. For diagnostic purposes, the sensitivity of FDG-PET scan is known to be low in this setting, though when positive, its prognostic value is not well-defined in NET.
Conference: 7th Annual ENETS Conference (2010)
Category: Clinical
Presenting Author: Dr Ivan Borbath
#97 The role of Ki-67 in the prognosis and management of neuroendocrine (NET) patients in a multdisciplinary cancer center
Introduction: The role of Ki-67 in NETs has become increasingly important, especially in light of the current trend in oncology to incorporate pathological molecular characteristics in determining treatment. In North America, Ki-67 is used inconsistently, as there exists some debate in the literature about its predictive value.
Conference: 7th Annual ENETS Conference (2010)
Category: Clinical
Presenting Author: Dr. Simron Singh
Authors: Singh S, Rowsel C, Ingber N, Yang S, ...
#106 Gastroenteropancreatic neuroendocrine tumors: single institution clinicopathological study
Introduction: Neuroendocrine cells are widely distributed throughout the body, and neoplasms from these dispersed cells can arise at many sites. They are distinguished into two broad categories: 1) Tumors identified as small cell lung carcinomas with biology and natural history of a high-grade malignancy and characteristics of small cell undifferentiated or anaplastic appearance by light microscopy. The WHO categorizes these tumors as poorly-differentiated neuroendocrine carcinomas; 2) Well-defined neuroendocrine tumors (NETs) with variable, but most lyindolent biologic behavior and characteristic well-differentiated histologic features. The majority arise in the gastrointestinal tract and collectively they are referred as gastroenteropancreatic neuroendocrine tumors (GEP/NETs). They include carcinoid tumors, pancreatic islet cell tumors (gastrinoma, insulinoma, glucagonoma, VIPoma, somatostatinoma), paragangliomas, pheochromocytomas, and medullary thyroid carcinomas. The WHO classifies the GEP/NETs as well-differentiated NETs (carcinoid tumors) if they are noninvasive and have benign behavior or uncertain malignant potential. In contrast, GEP/NETs with characteristics of low-grade malignancy with invasion of the muscularis propria or beyond, or metastases, are characterized as well-differentiated neuroendocrine carcinomas (malignant carcinoids). Pancreatic islet cell tumors, whether functioning or not, are classified as well-differentiated NETs or well-differentiated neuroendocrine carcinomas, due to the (depending on) histologic characteristics. The WHO classification for gastroenteropancreatic NETs based on stage (ie size and presence of metastases) and grade (mitotic rate, perineural and lymphovascular invasion, Ki-67 proliferative index) categorizes them as well-differentiated NETs, e.g., carcinoid tumors, or as well-differentiated neuroendocrine carcinomas.
Conference: 7th Annual ENETS Conference (2010)
Category: Clinical
Presenting Author: Dr Michael M. Vaslamatzis
#126 Assessment of the proliferation marker Ki-67 by endoscopic ultrasound guided-Fine Needle Aspiration (EUS-FNA) in pancreatic endocrine tumors: A comparative analysis with histology of the surgical specimen
Introduction: Assessment of the proliferative index by Ki-67 immuno-labelling is an important prognostic parameter for the biologic behavior of digestive neuroendocrine tumors, usually established on the histological specimen obtained after surgery or macro-biopsy. However, small pancreatic endocrine tumors (PET) are more and more often recognized by CT/MRI and diagnosed by EUS. The value of Ki-67 labelling index (Ki-67-LI) on fine needle aspiration (FNA) is not well-established in this setting, although regularly assessed.
Conference: 7th Annual ENETS Conference (2010)
Category: Clinical
Presenting Author: Dr Ivan Borbath