Evaluation of Mucin and Neuroendocrine Expression in Diffuse Gastric Cancer with Signet Ring Cell Morphology Abstract #622

Introduction: A proportion of diffuse gastric carcinoma, according to the Lauren classification system, has signet ring cell morphology. Signet ring cells are characterized by a peripherally placed nucleus and a central amorphous substance, which is reported to be mucin based on Periodic Acid Schiff positivity (PAS). PAS is not a specific staining method for mucin. Neuroendocrine expression has previously been reported in tumor cells in diffuse type gastric cancer.
Aim(s): To assess the exocrine and neuroendocrine properties of diffuse gastric cancer with signet ring cell morphology.
Materials and methods: Relevant gastrointestinal mucins and neuroendocrine markers were assessed by immunohistochemistry and in situ hybridization (ISH) by the use of a new and improved ISH method.
Conference: 10th Annual ENETS Conference 2013 (2013)
Category: Basic Science - mTOR and other pathways, signalling, receptors
Presenting Author: MD, PhD Øystein Sørdal

To read results and conclusion, please login ...

Further abstracts you may be interested in

#801 Normal Gastrointestinal Neuroendocrine Cells Lack E-cadherin
Introduction: E-cadherin plays a crucial role in the adhesion between epithelial cells and thus epithelial integrity. Moreover, germ line mutations in the E-cadherin gene (CDH1) causing loss of E-cadherin function (adhesion) leads to hereditary gastric cancer of the diffuse type, according to Laurén. Even sporadic gastric carcinomas of the diffuse type often lose E-cadherin expression due to mutations. Lack of E-cadherin has been recorded at an early phase in such carcinomas.
Conference: 11th Annual ENETS Conference 2014 (2014)
Category: Basic Science - mTOR and other pathways, signalling, receptors
Presenting Author: Øyvind Hauso
#1123 Clinicopathologic Characteristics of Gastric Amphicrine Carcinoma at a Single Institution
Introduction: Amphicrine carcinoma that shows evidence of duel neuroendocrine and epithelial differentiation occurs in the same cell is rare.
Conference: 12th Annual ENETS Conference 2015 (2015)
Category: Clinical cases/reports
Presenting Author: Dan Huang
Authors: Huang D, Sheng W, ...
#2683 Clinicopathological Features and Prognostic Analysis of 227 Cases with Well-Differentiated Gastric Neuroendocrine Tumors
Introduction: Gastric neuroendocrine neoplasms (g-NENs) are a group of rare tumors with a strong heterogeneity, subdivided as well-differentiated neuroendocrine tumors (NETs, type 1-3 g-NETs) and poorly-differentiated neuroendocrine carcinoma(NECs). WHO classification(2019) for digestive system tumours has carried out a new classification and grading criteria for NENs of the gastrointestinal tract recently, there is very few relevant clinical data based on this new classification, especially for gastric NETs(g-NETs).
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Epidemiology/Natural history/Prognosis - Registries, nationwide and regional surveys
Presenting Author: Yuanliang Li
Authors: Li Y, Tan H, Jie C, Jie L, ...
#2730 FOLFIRINEC, A Multi-Center, Randomized, Comparative Phase II Study of FOLFIRINOX vs Platinum-Etoposide as First Line Treatment for Metastatic Neuroendocrine Carcinoma of Gastroenteropancreatic or Unknown Origin, Associated with Molecular Profiling
Introduction: Grade 3 (G3) gastroenteropancreatic (GEP) neuroendocrine carcinoma (NEC) are rare diseases with a poor prognosis. FOLFIRINEC is a multicenter comparative phase II study of mFOLFIRINOX vs platinum-etoposide (PE) as first line treatment for metastatic G3 NEC of GEP or unknown origin.
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Trials in Progress/Trials in Concept
Presenting Author: Dr Julien Hadoux
#2738 Patient-Derived Organoid Models of Human Neuroendocrine Carcinoma
Introduction: Gastroenteropancreatic neuroendocrine carcinoma (GEP-NEC) is a poorly understood disease with limited treatment options. Due to its low incidence and wide tissue distribution few representative preclinical models are available
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Basic Science - In vitro models, tumor growth, CTCs
Presenting Author: MD PhD Margot Tesselaar