Abstract library

35 results for "5hiaa".
#2833 Surgical Correction of Carcinoid Heart Disease Improves Liver Function and 5-Hydroxyindoleacetic Acid Levels
Introduction: Neuroendocrine tumours of the gastrointestinal tract cause carcinoid syndrome and carcinoid heart disease. These tumours secrete serotonin, which can bind to heart valves and cause fibrosis and valve incompetence. Most cases involve the tricuspid valve +/- pulmonary valve. Medical management comprises diuretics for fluid overload and somatostatin analogues to reduce circulating serotonin. Definitive treatment is heart-valve replacement surgery which improves exercise tolerance but has high perioperative mortality. We have previously reported that valve-replacement surgery can reduce 5-hydroxyindoleacetic acid (5-HIAA) levels, reflecting a decline in hormone activity.
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Biomarkers
Presenting Author: Dr Tahir Shah
#3018 Real-Life Data for Telotristat Ethyl in Resistant-to-Treatment Carcinoid Syndrome: Is It Efficacious in Carcinoid Flushing as Well?
Introduction: Results from clinical trials with telotristat ethyl (TE) are really encouraging about its role in carcinoid syndrome-associated diarrhoea, however, its efficacy in flushing has been equivocal.
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Medical treatment - others, not specified
Presenting Author: Dr Julian Gertner
Keywords: telotristat
#2889 Transcatheter Arterial Embolization (TAE) of NEN Metastases: Efficacy and Predictors of Response
Introduction: Transcatheter-Arterial embolization (TAE) is an established regional, palliative treatment option for liver metastases in patients (pts) with neuroendocrine neoplasms (NENs).
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Medical treatment - Targeted therapies
Presenting Author: Dr Eleni Armeni
#34 Plasma Chromogranin A(CgA) and Urinary 5 Hydroxy-indoleacetic acid(5-HIAA) use in monitoring somatostatin analogue(SSA) therapy at Newcastle NHS Foundation Trust
Introduction: Two main biochemical markers, plasma chromogranin A (CgA) and urinary 5 hydroxy-indoleacetic acid (5-HIAA) are used to aid staging and monitoring of patients with neuroendocrine (NET) tumors. Somatostatin analogues (SSA) such as octreotide and lanreotide have been used to alleviate symptoms and disease progression in NET patients. This study evaluates the use of CgA and 5HIAA in monitoring NET patients on SSA therapy at Newcastle NHS Foundation Trust.
Conference: 7th Annual ENETS Conference (2010)
Category: Clinical
Presenting Author: Dr Andy James
Authors: Teo L, Hearn K, Bernstone G, Wright R, ...
#88 EpCam expression and detection of circulating tumor cells in neuroendocrine tumors
Introduction: Using the CellSearchTM system, circulating tumor cells (CTCs) can be reproducibly enumerated according to expression of EpCAM and cytokeratins 8, 18 or 19 and the absence of the haemopoietic marker CD45. The number of CTCs detected in 7.5 mls blood has been shown to correlate with prognosis in breast, colon and prostate cancer and can predict response to therapy. Neuroendocrine tumors (NETs) have not previously been reported to express EpCAM and have not been systematically assessed for presence of CTCs. We have therefore explored the expression of EpCAM in NETs and the detection of NET cells in the circulation.
Conference: 7th Annual ENETS Conference (2010)
Category: Clinical
Presenting Author: Dr Mohid S Khan
#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
#112 Chromogranin A is a sensitive marker for detection of recurrence in neuroendocrine tumors
Introduction: The chromogranin family is a family of large acidic proteins which are expressed in neuroendocrine cells. There are several members in this family (Chromogranin A, B (CgA and CgB) and the secretogranins). Here, we show that CgA is an excellent marker to detect recurrence in neuroendocrine tumors.
Conference: 7th Annual ENETS Conference (2010)
Category: Clinical
Presenting Author: Prof Eva Tiensuu Janson
#133 Effectiveness of transarterial embolization of liver neuroendocrine metastases
Introduction: Neuroendocrine tumors (NETs) with diffuse liver metastases have a poor prognosis and prove difficult to palliate. Somatostatin analogues and chemotherapy have been used but often are poorly tolerated and may not provide symptom relief. Transarterial Embolization (TAE) is being increasingly used to improve symptom control and reduce tumor size. We looked at the last 5-year experience of TAE in patients with hepatic metastases from neuroendocrine tumors.
Conference: 7th Annual ENETS Conference (2010)
Category: Clinical
Presenting Author: Dr Dalvinder S Mandair
#255 The Carcinoid Syndrome Caused by Retroperitoneal Carcinoid Tumors
Introduction: The carcinoid syndrome is caused by increased levels of serotonin and is mostly seen in cases of carcinoid tumor in the small bowel and liver metastases, as there is a very high first pass effect.
Conference: 8th Annual ENETS Conference (2011)
Category: Clinical
Presenting Author: Dr Benedicte V Wilson
Authors: Wilson B, Nielsen H O, ...
#356 Activin A in Carcinoid Heart Disease: A Possible Role in Diagnosis and Pathogenesis
Introduction: Carcinoid heart disease (CHD), a complication of NETs, is characterized by right heart fibrotic lesions. In addition to serotonin, cytokines and growth factors with fibrogenic properties may play a role.
Conference:
Category: Basic
Presenting Author: MD, PhD Deidi S. Bergestuen