Abstract library

522 results for "Medullary Thyroid Carcinoma".
#2732 Prostate Metastasis of Medullary Thyroid Carcinoma in a Young Patient with MEN2B Syndrome
Introduction: Multiple Endocrine Neoplasia 2B is associated with particularly early onset medullary thyroid carcinoma (MTC). Metastatic MTC is the leading cause of early death in MEN2B. The usual sites of metastasis are neck, mediastinum, lung, liver, bone and brain.
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Case reports
Presenting Author: Dr Jane Noble
#2813 Clinical Presentation and Prognosis of Patients with Medullary Thyroid Cancer
Introduction: Medullary thyroid carcinoma (MTC) is a rare type of tumor that originates from parafollicular C-cells and accounts for 3–4% of all malignant thyroid neoplasms. MTC presents as sporadic (75–80%) or inherited tumors (20–25%). Hereditary MTC is part of multiple endocrine neoplasia type 2 (MEN2).
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Epidemiology/Natural history/Prognosis - Registries, nationwide and regional surveys
Presenting Author: Federica de Cicco
#3074 Medullary Thyroid Carcinoma and DIPNECH: An Unexpected Association
Introduction: Medullary thyroid carcinoma (MTC) is a neuroendocrine tumour of the C-cells of thyroid gland. Diffuse idiopathic pulmonary neuroendocrine cells hyperplasia (DIPNECH) is a rare condition, thought to be primarily a neuroendocrine proliferative process which can develop into carcinoid tumours.
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Case reports
Presenting Author: Joana Lima Ferreira
#3079 Novel Symptoms and Therapy of Multiple Endocrine Neoplasia Type 1
Introduction: MEN1 is a rare autosomal inherited disease with hallmark of hyperparathyroidism, duodenopancreatic NENs and pituitary tumor.
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Case reports
Presenting Author: Jian-An Bai
Authors: Bai J A, Tang Q, ...
#2835 Primary Hepatic Neuroendocrine Carcinoma: Case Report and Literature Review
Introduction: Primary hepatic neuroendocrine carcinoma (PHNEC) is an extremely rare neuroendocrine carcinoma (NEC) that originate from the liver. The diagnosis of PHNEC remains challenging because of its rarity, and its lack of unique clinical features. Available treatment options for PHNEC include surgical resection of the liver tumor(s), radiotherapy, liver transplant, transcatheter arterial chemoembolization (TACE), and administration of somatostatin analogues.
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Case reports
Presenting Author: Dr Mohammed Alaeddine Saidi
Authors: Saidi M A, Ghomari S, ...
#2855 Whole Exome Sequencing Reveals the Monoclonal Origin of Gastric Mixed Adenoneuroendocrine Carcinomas
Introduction: Gastric mixed adenoneuroendocrine carcinomas (g-MANECs) are rare neoplasms consisting of adenocarcinoma and neuroendocrine neoplastic components. G-MANECs show more malignant characteristics than gastric adenocarcinomas, while molecular mechanisms underlying the co-existence of the two components remains unknown.
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Basic Science - Genetics, epigenetics, miRNAs, Omics
Presenting Author: M.D. Shida Yan
Authors: Yan S, Chen X, Zhang R, Song L, ...
#48 Preliminary report of the use of everolimus in a patient with progressive medullary thyroid carcinoma
Introduction: Medullary thyroid carcinoma (MTC) accounts for about 5-10% of all thyroid cancers, and while disease localized to the thyroid can be cured by surgery, there is no effective treatment for disseminated MTC. Constitutive activation of the RET proto-oncogene is implicated in familial and a proportion of sporadic cases, and up-regulates the AKT/PI3-kinase/mTOR signal transduction pathway. Recent studies have shown that the inhibitor of mTOR, everolimus (RAD001, Novartis, Basel), can inhibit the proliferation of the TT cell line and human MTC tumor cells in vitro. Clinically, everolimus has been shown to attenuate the progression of some gastrointestinal neuroendocrine tumors, but its clinical use in MTC has not yet been evaluated.
Conference: 7th Annual ENETS Conference (2010)
Category: Clinical
Presenting Author: Dr Maralyn R Druce
#79 PTOV-1 overexpression in neuroendocrine tumors: a new molecular marker
Introduction: PTOV-1 (Prostate Tumor Overexpressed-1) is a novel protein encoded by 12-exon gene localized in chromosome 19q.13.3. Recently identified as an androgen-induced gene, it is involved in prostate cell proliferation and in prostate human cancer. PTOV-1 expression has been demonstrated in neuroendocrine cells of normal prostate tissue. Preliminary data indicate that PTOV-1 can be related to flotilin, integrins and other cellular factors involved in cancer progression.
Conference: 7th Annual ENETS Conference (2010)
Category: Basic
Presenting Author: MD INES DE TORRES
#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
#156 Toxicity, response and survival analyses of Peptide Receptor Radionuclide Therapy (PRRT) in treatment refractory metastatic thyroid cancer using Yttrium-90 and Lutetium-177 Labeled somatostatin analogs
Introduction: Medullary thyroid carcinoma (MTC) represents about 3-16% of thyroid cancer. After first line treatment, therapeutic options for locally recurrent or metastasizing tumors include repeated surgery, whenever possible. Doxorubicin containing chemotherapy regimens in iodine-nonavid differentiated thyroid cancer have poor efficacy.
Conference: 7th Annual ENETS Conference (2010)
Category: Clinical
Presenting Author: Dr. Vikas Prasad
Authors: Prasad V, Budiawan H, Ali S, Hoersch D, ...