Abstract library

18 results for "gastroesophageal junction".
#1678 Multicenter Retrospective Analysis of Clinical and Pathological Features of Gastroesophageal Junction Neuroendocrine Neoplasm(GEJ-NEN)
Introduction: GEJ-NEN is mostly poorly differentiated NEC with poor prognosis.
Conference: 14th Annual ENETS conference (2017)
Category: Epidemiology/Natural history/Prognosis - Registries, nationwide and regional surveys
Presenting Author: Panpan Zhang
Authors: Zhang P, Lu M, Shen L, Wang W, ...
#1551 Establishment and Characterization of Three GEP-NEC Cell Lines for In Vitro and In Vivo Studies
Introduction: To date chemotherapeutic concepts applying cisplatin/etoposide for the treatment of highly aggressive GEP-NEC do not provide convincing results. Thus, there is an urgent need for NEC cell line models that provide a reliable experimental system in identifying novel therapeutic targets.
Conference: 13th Annual ENETS conference (2016)
Category: Basic Science - In vitro models, tumor growth, CTCs
Presenting Author: Dr. Andreas Krieg
Authors: Krieg A, Riemer J C, Dizdar L, Mersch S, ...
Keywords: GEP-NEC
#9 Case Management of Metastatic carcinoid of the Foregut,Midgut and Hindgut:the relevance of Ki-67 prognostication
Introduction: The predictive value of tumor grade in the prognosis of carcinoid is insufficient and somehow misleading. The grade and differentiation in carcinoid tumors must be seen in conjunction with the Ki-67 index. The Ki-67 protein is a cellular marker for proliferation, present during all active phases of the cell cycle (G1, S, G2 and mitosis) and absent from resting cells (G0). It is therefore an excellent marker to determine the growth fraction of a given cell population. The Ki-67 labelling index is often correlated with the clinical course of carcinoid.
Conference: 7th Annual ENETS Conference (2010)
Category: Basic
Presenting Author: Dr Marianne J Kohler
Authors: Szpak W M, Stapleton G, ...
#22 A Case Illustrative of Phenotypic Heterogeneity and Challenges in the Management of Paraganglioma
Introduction: Paragangliomas (PGLs) are extra-adrenal, usually benign, highly vascularized tumors that originate from neural-crest-derived chromaffin cells. These tumors are subdivided as either sympathetic or parasympathetic, depending on their location and catecholamine production. Sympathetic PGLs are situated along the abdominal sympathetic trunk and usually produce catecholamines, whereas parasympathetic PGLs are located in the head and neck, and these usually do not produce catecholamines. PGLs may present as sporadic or inherited tumor syndrome, including MEN 2, with RET germline mutations, von Hippel-Lindau (VHL) disease due to germline mutations in VHL gene, and pheochromocytoma-PGL syndrome. The latter is frequently a hereditary condition and is caused by germline mutations in the SDHB, SDHC, or SDHC genes. Patients with familial PGLs may present at a younger age, often as multifocal tumors, with an increased risk of recurrence and a higher frequency of malignancy in those with SDHB mutations. SDH mutations induce angiogenesis and tumorogenesis through the inhibition of hypoxia-inducible factors (HIF)-propyl hyroxylase. A younger age at onset, malignancy, and a positive family history are clinical parameters of high specificity, but low sensitivity for diagnosis. Genetic analysis for mutations in SDH genes for the patient and family members, and surveillance for the affected patient and family members, are necessary where there are no clear clinical or family indicators for the syndrome. We present a case of a large abdominal malignant PGL in a 20-year-old pt. that went on without clinical detection for at least three years.
Conference: 7th Annual ENETS Conference (2010)
Category: Clinical
Presenting Author: Dr Mohammed Ahmed
#39 Specialist dietetic input and nutritional outcomes in Neuroendocrine Tumour Patients
Introduction: Neuroendocrine tumors (NETs) are a heterogeneous group of tumors that are complex to manage and require a multidisciplinary approach. The most common primary sites are the small intestine and pancreas. The disease itself, as well as sequelae from surgery and medical therapy, can have a negative impact on patients’ nutritional status. Weight loss is known to be a poor prognostic indicator.
Conference: 7th Annual ENETS Conference (2010)
Category: Clinical
Presenting Author: MRS CALEY L SCHNAID
Authors: Schnaid C, Khan M, Davies P, Jamieson A, ...
#271 A Novel Missense Mutation of the TMEM127 Gene that Leads to Pheochromocytoma Phenotype
Introduction: Recently, truncating germline mutations in TMEM127 gene have been identified in 30% of familial cases of adrenal pheochromocytoma (PHEO) and in 3% of apparently sporadic cases.
Conference: 8th Annual ENETS Conference (2011)
Category: Basic
Presenting Author: Rita Domingues
#357 Alternative Splicing and Differential Gene Expression in Pancreatic NETs
Introduction: Alternative splicing is an important mechanism to increase diversity of the proteome in higher organisms. These protein isoforms can provide as a selective drug target or marker for cancer diagnosis.
We present here a new DNA array that allows identification of splice variation and differential expression of 357 G protein-coupled receptors (GPCR) and 11 proteins of the extracellular matrix.
Conference:
Category: Basic
Presenting Author: Jan Lennart Körner
#386 A Prospective Evaluation of the Effects of Chronic Proton Pump Inhibitor Use on Plasma Biomarker Levels in Humans
Introduction: Proton pump inhibitors (PPIs) are used primarily to treat gastroesophageal reflux disease. PPI-induced achlorhydria increases circulating gastrin and chromogranin A (CGA). CGA is a widely used biomarker for the diagnosis and follow-up for gut-based neuroendocrine tumors (NETs). PPI-induced increases in CGA or gastrin may falsely suggest the presence of a NET when none exists. Pancreastatin, a fragment of CGA, is also commonly used to diagnose and follow NETs.
Conference: 9th Annual ENETS Conference (2012)
Category: Clinical
Presenting Author: Dr Eugene Woltering
#400 Challenges in the Management of a Disseminated Malignant Abdominal Paragangliom (MPGL)
Introduction: Despite current availability of large array of Rx modalities, management of MPGLs still pose a challenge.
Conference: 9th Annual ENETS Conference (2012)
Category: Clinical
Presenting Author: Dr. Mohammed Ahmed
Authors: Ahmed M, Ameen T, Bazarbashi S, ...
#459 Differential Claudin-1 Gene Expression in Neural Crest-Derived Tumors of Common Embryological Origin
Introduction: Pheochromocytoma and paraganglioma are neural crest-derived tumors originating from chromaffin cells, with the former being intra–adrenal in location, while the latter are extra-adrenal.
Conference: 9th Annual ENETS Conference (2012)
Category: Basic
Presenting Author: Miss Beatrice Philip
Authors: Philip B, Smith R, Lam A, ...
Keywords: Claudin-1