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Medullary thyroid cancer

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https://www.readbyqxmd.com/read/28103650/thyroid-cancer-after-hysterectomy-on-benign-indications-findings-from-an-observational-cohort-study-in-sweden
#1
Henrik Falconer, Li Yin, Rino Bellocco, Daniel Altman
To investigate the association between hysterectomy and thyroid cancer subtypes based on histopathology. We did a nationwide, population-based, cohort study from 1973 to 2009 in Sweden. We identified as our study population all women above 18 years of age during the period between January 1, 1973 and December 31, 2009 from the Register of Population (n= 5.704,202) Individual case ascertainment of primary thyroid cancer subtypes were restricted to 1993-2009 based on histological pathologic-anatomical-diagnosis from the Cancer Register...
January 19, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28101492/trends-and-predictors-of-chemotherapy-use-among-thyroid-cancer-patients-in-the-national-cancer-database-2004-2013
#2
Stacey A Fedewa, Ahmedin Jemal, Amy Y Chen
BACKGROUND/AIM: Beginning in 2011, the Food and Drug Administration (FDA) approved the use of multikinase inhibitors (MKIs) for medullary thyroid cancers (MTCs), and in 2013 MKIs were approved for metastatic differentiated thyroid cancers (DTCs). However, little is known about the use of chemotherapy in thyroid cancer patients. Thus, the goal of our study was to describe patterns of chemotherapy use, including MKIs, among DTC and MTC patients in the National Cancer Database (NCDB). METHODS: Chemotherapy use, along with other treatment types (surgery and radiation), was assessed between 2004 and 2013...
December 2016: European Thyroid Journal
https://www.readbyqxmd.com/read/28099363/different-ret-gene-mutation-induced-multiple-endocrine-neoplasia-type-2a-in-3-chinese-families
#3
Qiuli Liu, Dali Tong, Wenqiang Yuan, Gaolei Liu, Gang Yuan, Weihua Lan, Dianzheng Zhang, Jun Zhang, Zaoming Huang, Yao Zhang, Jun Jiang
BACKGROUD: Multiple endocrine neoplasia type 2A (MEN2A) is a condition with inherited autosomal dominant mutations in RET (rearranged during transfection) gene that predisposes the carrier to extremely high risk of medullary thyroid cancer (MTC) and other MEN2A-associated tumors such as parathyroid cancer and/or pheochromocytoma. Little is reported about MEN2A syndrome in the Chinese population. METHODS: All members of the 3 families along with specific probands of MEN2A were analyzed for their clinical, laboratory, and genetic characteristics...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28097314/complications-of-bilateral-neck-dissection-in-thyroid-cancer-from-a-single-high-volume-center
#4
Caitlin McMullen, Daniel Rocke, Jeremy Freeman
Importance: The morbidity of bilateral lateral neck dissection (BLND) for thyroid cancers has not been described in detail. This study delineates the specific complications arising from BLND for thyroid cancers at a single high-volume center. Objective: To determine the morbidity associated with BLNDs for differentiated thyroid cancers at our institution. Design, Setting, and Participants: This was a retrospective review of medical records performed to identify patients having undergone BLNDs for thyroid cancers by a single surgeon at an academic, tertiary medical center in Toronto, Ontario, Canada, from 1988 to 2015...
January 12, 2017: JAMA Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/28094086/differentiated-and-medullary-thyroid-cancer-surgical-management-of-cervical-lymph-nodes
#5
P Asimakopoulos, I J Nixon, A R Shaha
Thyroid cancer metastasises to the central and lateral compartments of the neck frequently and early. The impact of nodal metastases on outcome is affected by the histological subtype of the primary tumour and the patient's age, as well as the size, number and location of those metastases. The impact of extranodal extension has recently been highlighted as an important prognosticating factor. Although clinically evident nodal disease in the lateral neck compartments has a significant impact on both survival and recurrence, microscopic metastases to the central or the lateral neck in well-differentiated thyroid cancer do not significantly affect outcome...
January 13, 2017: Clinical Oncology: a Journal of the Royal College of Radiologists
https://www.readbyqxmd.com/read/28069896/anti-tumor-effects-of-shikonin-derivatives-on-human-medullary-thyroid-carcinoma-cells
#6
Carina Hasenoehrl, Gert Schwach, Nassim Ghaffari-Tabrizi-Wizsy, Robert Fuchs, Nadine Kretschmer, Rudolf Bauerr, Roswitha Pfragner
New treatment options are needed for medullary thyroid carcinoma (MTC), a highly metastasizing neuroendocrine tumor that is resistant to standard radio- and chemotherapy. We show that the following shikonin derivatives inhibit cell proliferation and cell viability of the MTC cell line TT: acetylshikonin, β,β-dimethylacrylshikonin, shikonin and a petroleum ether extract of the roots of Onosma paniculata containing several shikonin derivatives. The unsubstituted shikonin derivative was found to be the most effective compound with an IC50 of 1...
January 9, 2017: Endocrine Connections
https://www.readbyqxmd.com/read/28042533/a-brief-review-on-the-molecular-basis-of-medullary-tyroid-carcinoma
#7
REVIEW
Masoumeh Mohammadi, Mehdi Hedayati
Approximately 5-10% of all thyroid cancers are medullary thyroid carcinomas (MTC). MTC is mainly sporadic in nature, but 20-30% of cases are hereditary. Genetic testing for hereditary MTC is very important for the patient and his family, but the patients must be receiving appropriate genetic counseling. About 98% of patients with hereditary MTC have germline mutations in exons 10, 11, 13, 14, 15, 16 and intron 16 of the REarrangement during transfection (RET) proto-oncogene, but the etiology of the more frequent sporadic form of MTC (sMTC) is not well understood...
2017: Cell Journal
https://www.readbyqxmd.com/read/28038712/heat-shock-proteins-hsp90-hsp70-and-grp78-expression-in-medullary-thyroid-carcinoma
#8
Ethan Soudry, Sagit Stern Shavit, Britta Hardy, Sarah Morgenstern, Tuvia Hadar, Raphael Feinmesser
BACKGROUND: Medullary thyroid carcinoma management consists mainly of surgical resection and is largely chemoresistant. There is ongoing effort to discover novel therapies for medullary thyroid carcinoma. Increased levels of heat shock proteins have been associated with multiple cancers and are being studied as potential therapeutic targets. The purpose of this study was to determine the expression levels of heat shock proteins 90 and 70 and of glucose related protein 78 in medullary thyroid carcinoma tissues compared with normal thyroid tissues...
February 2017: Annals of Diagnostic Pathology
https://www.readbyqxmd.com/read/28025618/ab3-loaded-and-tumor-targeted-unimolecular-micelles-for-medullary-thyroid-cancer-treatment
#9
Renata Jaskula-Sztul, Guojun Chen, Ajitha Dammalapati, April Harrison, Weiping Tang, Shaoqin Gong, Herbert Chen
Medullary thyroid cancer (MTC) is often resistant to standard therapies, emphasizing the need for the development of other treatments. A new histone deacetylase inhibitor, AB3, can effectively inhibit MTC cell proliferation in vitro. However, its poor aqueous solubility and stability, fast clearance, and lack of tumor targeting ability limit its in vivo application. Therefore, multifunctional unimolecular micelles were developed for targeted delivery of AB3 for MTC therapy. The unimolecular micelles exhibited a spherical core-shell structure, uniform size distribution, and excellent stability...
January 7, 2017: Journal of Materials Chemistry. B, Materials for Biology and Medicine
https://www.readbyqxmd.com/read/27994876/disease-modifying-polymorphisms-and-c609y-mutation-of-ret-associated-with-high-penetrance-of-phaeochromocytoma-and-low-rate-of-mtc-in-men2a
#10
Rowena Speak, Jackie Cook, Barney Harrison, John Newell-Price
: Mutations of the rearranged during transfection (RET) proto-oncogene, located on chromosome 10q11.2, cause multiple endocrine neoplasia type 2A (MEN2A). Patients with mutations at the codon 609 usually exhibit a high penetrance of medullary thyroid cancer (MTC), but a sufficiently low penetrance of phaeochromocytoma that screening for this latter complication has been called to question. Patients with other RET mutations are at higher risk of younger age onset phaeochromocytoma if they also possess other RET polymorphisms (L769L, S836S, G691S and S904S), but there are no similar data for patients with 609 mutations...
2016: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/27989550/pet-imaging-for-thyroid-cancers-current-status-and-future-directions
#11
Anne-Laure Giraudet, David Taïeb
Positron emission tomography-computed tomography (PET/CT) combines both functional and anatomic information and provides in vivo molecular information on biological processes that can be useful at different steps of evolution of thyroid cancers. (18)Fluorodeoxyglucose being highly trapped in rapidly dividing cells makes (18)F-FDG-PET recommended in the staging, prognostic evaluation and follow-up of metastatic and/or of poorly differentiated thyroid carcinomas. (18)F-FDG PET/CT can help in the localization of persistent/recurrent disease...
December 15, 2016: Annales D'endocrinologie
https://www.readbyqxmd.com/read/27943373/most-thyroid-cancers-detected-by-sonography-lack-intranodular-vascularity-on-color-doppler-imaging-review-of-the-literature-and-sonographic-pathologic-correlations-for-698-thyroid-neoplasms
#12
Grace C H Yang, Karen O Fried
OBJECTIVES: This study investigated the controversy of whether hypervascularity on color Doppler sonography correlates with thyroid malignancy by reviewing the literature and sonographic-pathologic correlation. METHODS: Over a 20-year period, 698 thyroid nodules had color Doppler and histopathologic data. Intranodular vascularity was graded 0 to 3+, and histopathologic findings were recorded. RESULTS: The data were collected from 698 patients (557 women and 141 men) with a mean age of 48 years (range, 16-87 years)...
December 1, 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/27938505/upregulated-mir-9-3p-promotes-cell-growth-and-inhibits-apoptosis-in-medullary-thyroid-carcinoma-by-targeting-blcap
#13
Yangjing Chen, Shaoqiang Zhang, Ruimin Zhao, Qian Zhao, Ting Zhang
Medullary thyroid carcinoma (MTC) is one of neuroendocrine cancer derived from parafollicular C cells in thyroid gland.It is great interesting as a research focus because of its unusual genetic, clinical and prognostic characteristics. However, the pathogenesis in MTC is not completely clear. Herein, we investigated the role of miR-9-3p and BLCAP in MTC TT cells. Firstly, miR-9-3p expression was up-regulated in human MTC tissues and TT cells compared to the control, as evaluated by RT-PCR. Flow cytometric analysis indicated that the cell cycle progression in TT cells were significantly inhibited by miR-9-3p inhibitor, but was increased by miR-9-3p mimic...
November 17, 2016: Oncology Research
https://www.readbyqxmd.com/read/27935748/atf4-targets-ret-for-degradation-and-is-a-candidate-tumor-suppressor-gene-in-medullary-thyroid-cancer
#14
Rozita Bagheri-Yarmand, Michelle D Williams, Elizabeth G Grubbs, Robert F Gagel
CONTEXT: Medullary thyroid cancer (MTC) is an aggressive tumor that harbors activating mutations of the RET proto-oncogene. We previously reported that RET inhibits transcriptional activity of ATF4, the master regulator of the stress response pathway, to prevent cell death. OBJECTIVE: We hypothesized that loss of function of ATF4 play a role in initiation of MTC. DESIGN: Targeted deletion of ATF4 in mice was used to assess ATF4 function in the thyroid gland...
December 9, 2016: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/27904849/medullary-thyroid-carcinoma-a-30-year-experience-at-one-institution-in-korea
#15
Cho Rok Lee, Sohee Lee, Haiyoung Son, Eunjeong Ban, Sang-Wook Kang, Jandee Lee, Jong Ju Jeong, Kee-Hyun Nam, Woong Youn Chung, Cheong Soo Park
PURPOSE: The objective of this study was to review the clinical outcome and prognosis of patients with sporadic and hereditary medullary thyroid cancer (MTC) who were treated at a single tertiary hospital in Korea. METHODS: We retrospectively reviewed the case files of 85 patients treated from August 1982 to February 2012. RESULTS: In all, 65 patients (76.5%) had sporadic MTC and 20 patients (23.5%) had hereditary MTC. Patients in the sporadic group were older than in the hereditary group (P < 0...
December 2016: Annals of Surgical Treatment and Research
https://www.readbyqxmd.com/read/27900756/a-rare-case-of-medullary-carcinoma-thyroid-metastasizing-to-bilateral-breast-parenchyma
#16
Aamna Hassan, Maimoona Siddiqui, Sidra Jahangir
Medullary carcinoma of the thyroid (MTC) commonly spreads through the lymphatics to distant sites such as lung, liver and bone. Spread to the breast is rare. We report a case of metastatic MTC which progressed to develop nodal metastases to cer-vical and mediastinal regions, visceral metastases to the liver, lung and ultimately to bilateral breasts. Clinically it is important to distinguish metastatic breast lesions from primary breast cancer as each is managed differently. Both cytological and radio-logical investigations were done followed by excision biopsy...
2016: Nuclear Medicine Review. Central & Eastern Europe
https://www.readbyqxmd.com/read/27899191/genetic-predisposition-to-endocrine-tumors-diagnosis-surveillance-and-challenges-in-care
#17
REVIEW
Elisabeth Joye Petr, Tobias Else
Endocrine tumor syndromes, eg, multiple endocrine neoplasia types 1 and 2, were among the first recognized hereditary predisposition syndromes to tumor development. Over time, the number of endocrine tumor syndromes has significantly expanded, eg, with the recent inclusion of hereditary paraganglioma syndromes. Associations of non-endocrine tumors with hereditary endocrine tumor syndromes and endocrine tumors with non-classical endocrine tumor syndromes have emerged. These findings have certainly expanded the scope of care, necessitating a multidisciplinary approach by a team of medical professionals and researchers, integrating shared patient decision-making at every step of surveillance, diagnosis, and treatment...
October 2016: Seminars in Oncology
https://www.readbyqxmd.com/read/27873108/flushing-in-neuro-endocrinology
#18
REVIEW
Fady Hannah-Shmouni, Constantine A Stratakis, Christian A Koch
Cutaneous flushing is a common presenting complaint in endocrine disorders. The pathophysiology of flushing involves changes in cutaneous blood flow triggered by multiple intrinsic factors that are either related to physiology or disease. Flushing can be divided into episodic or persistent causes. Episodic flushing is mediated by the release of endogenous vasoactive mediators or medications, while persistent flushing results in a fixed facial erythema with telangiectasia and cyanosis due to slow-flowing deoxygenated blood in large cutaneous blood vessels...
September 2016: Reviews in Endocrine & Metabolic Disorders
https://www.readbyqxmd.com/read/27872141/differential-roles-of-ret-isoforms-in-medullary-and-papillary-thyroid-carcinomas
#19
Eric Y Lian, Sarah M Maritan, Jessica G Cockburn, Katayoon Kasaian, Mathieu J F Crupi, David Hurlbut, Steven J M Jones, Sam M Wiseman, Lois M Mulligan
The RET receptor tyrosine kinase mediates cell proliferation, survival and migration in embryogenesis and is implicated in the transformation and tumour progression in multiple cancers. RET is frequently mutated and constitutively activated in familial and sporadic thyroid carcinomas. As a result of alternative splicing, RET is expressed as two protein isoforms, RET9 and RET51, which differ in their unique C-terminal amino acids. These isoforms have distinct intracellular trafficking and associated signalling complexes, but functional differences are not well defined...
January 2017: Endocrine-related Cancer
https://www.readbyqxmd.com/read/27869424/-study-of-medullary-thyroid-carcinoma-from-a-proband
#20
Laura Morlán Herrador, Antonio de Arriba, Gloria Miguel, Marta Ferrera, José I Labarta
Thyroid cancer is an uncommon type of cancer, accounting less than 1% of all cancers in adults, and 0.5-3% of all cancers in children. There are four different types: papillary carcinoma (80-90% of cases), follicular (5-10%), medullary (5%) and anaplastic cell (2-3%). Eighty per cent of cases of medullary thyroid cancer are sporadic, but 20% are associated with an inherited syndrome that is divided into three groups: multiple endocrine neoplasia type 1, multiple endocrine neoplasia type 2 and familial medullary thyroid carcinoma...
December 1, 2016: Archivos Argentinos de Pediatría
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