Abstract library

1762 results for "gastroenteropancreatic neuroendocrine neoplasias".
#1630 The Positive Expression of PD-L1/PD-1 in Gastroenteropancreatic Neuroendocrine Neoplasias Correlates with Prognosis
Introduction: The incidence of Neuroendocrine Neoplasias (NENs) is increasing and their pathological characteristics, varied between races. However, the epidemiology of GEP-NENs in Chinese patients remains poorly characterized especially for the expression of important immune checkpoint protein PD1 and PD-L1.
Conference: 14th Annual ENETS conference (2017)
Category: Pathology, grading, staging
Presenting Author: Wu Yinying
Authors: Yinying W, Chuying W
#2214 The Trend of Using CT to Diagnose the Gastroenteropancreatic Neuroendocrine Neoplasms: Results of a Nation-Wide Retrospective Epidemiology Study in China
Introduction: Representative data on the gastroenteropancreatic neuroendocrine neoplasms (GEP-NENs) in Asian patients is rare, especially in China.
Conference: 15th Annual ENETS conference (2018)
Category: Epidemiology/Natural history/Prognosis- Registries, nationwide and regional surveys
Presenting Author: professor Fan Jinhu
Authors: Fan J, Yu P, Chi Y, Shi S, ...
#87 Alterations of E-cadherin, beta-catenin and caveolin-1 expression in gastroenteropancreatic neuroendocrine tumors
Introduction: Gastroenteropancreatic neuroendocrine tumors (GEP NETs) comprise a heterogeneous group of neoplasm with different histological patterns and biological behavior. Only limited information is available on immunohistochemical prognostic factors of disease. Alterations in the cell-cell adhesion system are closely associated with cell invasion and metastasis in many malignancies, including those of endocrine origin. Abnormal expression of E-cadherin and beta-catenin has been reported to play an important role in these processes. Caveolin-1 has recently been identified as a tumor metastasis modifier factor, which might increase the cell metastasis potential through the interaction with E-cadherin. However, the role of caveolin-1 in GEP NETs cell invasion remains unknown.
Conference: 7th Annual ENETS Conference (2010)
Category: Clinical
Presenting Author: Vera V Delektorskaya
Authors: Delektorskaya V, Chemeris G, ...
#867 Mixed Adenoneuroendocrine Carcinoma (MANECs): A Rare and Challenging Subgroup of Neuroendocrine Neoplasia
Introduction: Mixed Adenoneuroendocrine Carcinomas (MANECs) are rare entities in which at least 30% of neoplastic cells are neuroendocrine in nature (WHO 2010 classification). They result either from two independent lesions that merge together or are unique lesions with different cell populations intermingled.
Conference: 11th Annual ENETS Conference (2014)
Category: Pathology, grading, staging
Presenting Author: Dr Conor Mosli Lynch
#873 The Analysis of Immunohistochemistry Staining, Neuronspecific Enolase (NSE) Level and Somatostatin Receptor Scintigraphy of Gastroenteropancreatic Neuroendocrine Neoplasm Cases
Introduction: 99mTc-HYNIC-TYR3-OCTREOTIDE somatostatin receptor (SSR) scintigraphy has been used to diagnose gastroenteropancreatic neuroendocrine neoplasms (GEP-NEN).
Conference: 11th Annual ENETS Conference (2014)
Category: Imaging (radiology, nuclear medicine, endoscopy)
Presenting Author: Jiangyuan Yu
Authors: Yu J, Li J, Yang Z, ...
#2019 Gastroenteropancreatic Neuroendocrine Neoplasms (GEP-NENs) in the Czech NEN Registry 2009-2016: Histologic Spectrum and Clinicopathological Features
Introduction: Gastroenteropancreatic neuroendocrine neoplasms (GEP-NENs) represent a group of uncommon, but clinically significant diseases. The data published so far have shown significant regional differences in their incidence and appearance in individual primary sites.
Conference: 15th Annual ENETS conference (2018)
Category: Epidemiology/Natural history/Prognosis- Registries, nationwide and regional surveys
Presenting Author: MD Jaroslava Barkmanova
#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
#305 Risk Stratification Using Octreotide Test for Patients with Gastroenteropancreatic Neuroendocrine Tumors: Results of Prospective Validation of the Test
Introduction: We recently demonstrated that a plasma CgA decrement >30% after octreotide s.c. injection is a simple criterion for treatment with Somatostatin analogues (SSA) of gastroenteropancreatic endocrine tumors.
Conference: 8th Annual ENETS Conference (2011)
Category: Clinical
Presenting Author: Sara Massironi
#1454 Everolimus in the Treatment of Advanced Gastroenteropancreatic Neuroendocrine Neoplasm: A Single-Center Retrospective Study in China
Introduction: Everolimus showed antitumor activity in patients with advanced pancreatic neuroendocrine tumors in a phase III clinical trial, but data in Chinese patients was limited.
Conference: 13th Annual ENETS conference (2016)
Category: Medical treatment - Targeted therapies
Presenting Author: Chen Jie
Authors: Zhang Y, Chen L, Chen M, Chen J, ...
#2012 Expression and Clinical Significance of Vascular Endothelial Growth Factor D in Gastroenteropancreatic Neuroendocrine Neoplasms
Introduction: The expression of vascular endothelial growth factor D (VEGF-D) in tumor cells versus stroma cells in gastroenteropancreatic neuroendocrine neoplasms (GEP-NEN) and its clinical significance is still unknown.
Conference: 15th Annual ENETS conference (2018)
Category: Basic Science - Signaling pathways, receptors, biomarkers
Presenting Author: Professor Jie Chen
Authors: Zhang Y, Chen L, Lin Y, Chen M, ...
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