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Medullary thyroid carcinoma

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https://www.readbyqxmd.com/read/28635560/sorafenib-in-japanese-patients-with-locally-advanced-or-metastatic-medullary-thyroid-carcinoma-and-anaplastic-thyroid-carcinoma
#1
Yasuhiro Ito, Naoyoshi Onoda, Ken-Ichi Ito, Iwao Sugitani, Shunji Takahashi, Iku Yamaguchi, Koki Kabu, Katsuya Tsukada
BACKGROUND: Therapeutic options for treating advanced or metastatic medullary thyroid carcinoma (MTC) and anaplastic thyroid carcinoma (ATC) are still limited in Japan even though vandetanib for MTC, and lenvatinib for MTC and ATC have been approved. Sorafenib is an oral multikinase inhibitor approved for the treatment of patients with radioactive iodine-refractory (RAI-R) differentiated thyroid cancer (DTC). We conducted an uncontrolled, open-label, multicenter, single-arm, phase 2 clinical study to evaluate the safety and efficacy of sorafenib in Japanese patients with MTC and ATC...
June 21, 2017: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/28633552/cabozantinib-for-the-treatment-of-kidney-cancer
#2
Ahmed Abdelaziz, Ulka Vaishampayan
Cabozantinib is a small molecule tyrosine kinase inhibitor that initially showed activity in medullary thyroid cancer and was recently approved by the Food and Drug Administration for the treatment of metastatic renal cell carcinoma after progression on first line therapy. Areas Covered: In the METEOR trial, cabozantinib demonstrated significantly improved efficacy in all three endpoints; response rates, progression free survival and overall survival in a randomized trial with everolimus as an active comparator...
June 21, 2017: Expert Review of Anticancer Therapy
https://www.readbyqxmd.com/read/28614134/value-of-99mtc-mibi-spect-ct-parathyroid-imaging-and-ultrasonography-for-concomitant-thyroid-carcinoma
#3
Rui Guo, Jiqiu Wang, Min Zhang, Miao Zhang, Hongping Meng, Yifan Zhang, Biao Li
PURPOSE: We aimed to assess the frequency of carcinoma in cases with suspected parathyroid adenoma and test the value of Tc-methoxyisobutylisonitrile (Tc-MIBI) single-photon emission computed tomography/computed tomography (SPECT/CT) parathyroid imaging and neck ultrasonography in detecting concomitant thyroid carcinoma. PATIENTS AND METHODS: We enrolled 741 patients with clinically suspected parathyroid adenoma who underwent Tc-MIBI planer scans and SPECT/CT of the skull base, neck, and thorax; patients also underwent ultrasonography within 1 month before SPECT/CT...
June 13, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28614009/the-combined-use-of-calcitonin-doubling-time-and-18-f-fdg-pet-ct-improves-prognostic-values-in-medullary-thyroid-carcinoma-the-clinical-utility-of-18-f-fdg-pet-ct
#4
Ji H Yang, Cléber P Camacho, Susan C Lindsey, Flavia O F Valente, Danielle M Andreoni, Lilian Y Yamaga, Jairo Wagner, Rosa Paula M Biscolla, Rui M B Maciel
OBJECTIVE: Calcitonin and carcinoembryonic antigen (CEA) doubling times are established prognostic markers in medullary thyroid cancer (MTC). On the other hand, positron emission tomography with fluorine-18 fluorodeoxyglucose ((18)F-FDG PET/CT) shows an increased rate of detection with high blood tumor marker levels in several cancers. This study aims to analyze the ability of (18)F-FDG PET/CT to determine prognosis in the followup of patients with MTC. METHODS: Medical records of 17 patients with MTC who underwent (18)F-FDG PET/CT were analyzed retrospectively...
June 14, 2017: Endocrine Practice
https://www.readbyqxmd.com/read/28614007/ectopic-cushing-s-syndrome-a-ten-year-experience-from-a-tertiary-care-centre-in-southern-india
#5
Samantha Sathyakumar, Thomas Vizhalil Paul, Hesargatta Shyamsunder Asha, Birla Roy Gnanamuthu, M J Paul, Deepak Thomas Abraham, Simon Rajaratnam, Nihal Thomas
OBJECTIVE: Ectopic ACTH secretion is a less common cause of Cushing's syndrome, and is seen in 5 to 10% of cases with endogenous hypercortisolemia. We hereby describe our experience of patients with ectopic ACTH syndrome, who have been managed over the past 10 years at a tertiary care centre in Southern India. METHODS: The inpatient and outpatient records of patients from 2006 to 2015 were retrospectively reviewed. The clinical features, clinical history, biochemical values, imaging features which included radiological findings and PET scans, management, details of follow-up and outcomes were documented...
June 14, 2017: Endocrine Practice
https://www.readbyqxmd.com/read/28610401/oncogenesis-of-thyroid-cancer
#6
Enas Younis
Thyroid neoplasms encompass a variety of lesions that range from benign adenomas to malignancies. These latter can be well-differentiated, poorly differentiated or undifferentiated (anaplastic) carcinomas. More than 95% of thyroid cancers are derived from thyroid follicular cells, while 2-3% (medullary thyroid cancers, MTC) originate from calcitonin producing C-cells. Over the last decade, investigators have developed a clearer understanding of genetic alterations underlying thyroid carcinogenesis. A number of point mutations and translocations are involved, not only in its tumorigenesis, but also as have potential use as diagnostic and prognostic indicators and therapeutic targets...
May 1, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28609830/medullary-thyroid-carcinoma-in-men2a-ata-moderate-or-high-risk-ret-mutations-do-not-predict-disease-aggressiveness
#7
Rachel K Voss, Lei Feng, Jeffrey E Lee, Nancy D Perrier, Paul H Graham, Samual M Hyde, Frances Nieves-Munoz, Maria E Cabanillas, Steven G Waguespack, Gilbert J. Cote, Robert F Gagel, Elizabeth G Grubbs
Context: High-risk RET mutations (codon 634) are associated with earlier development of medullary thyroid carcinoma (MTC) and presumed increased aggressiveness compared with moderate-risk RET mutations. Objective: To determine if high-risk RET mutations are more aggressive Design: Retrospective cohort study utilizing institutional MEN2 registry Setting: A tertiary cancer care center Patients: Those with MTC and moderate- or high-risk germline RET mutation...
May 9, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28605116/phaeochromocytoma-in-multiple-endocrine-neoplasia-type-2-ret-codon-specific-penetrance-and-changes-in-management-during-the-last-four-decades
#8
L Mucha, G Leidig-Bruckner, K Frank-Raue, Th Bruckner, M Kroiss, F Raue
OBJECTIVES: We describe phaeochromocytoma penetrance in multiple endocrine neoplasia type 2 (MEN2) according to RET protooncogene-specific mutations, and report changes in phaeochromocytoma diagnosis and management from 1968 to 2015. DESIGN: This retrospective chart review included 309 MEN2 patients from one specialised ambulatory care centre. Phaeochromocytoma patients were categorised by diagnosis date: early, 1968-1996, n = 40; and recent, 1997-2015, n = 45. RESULTS: Phaeochromocytoma was diagnosed in 85/309 patients with RET mutations in the following exons (phaeos/all carriers, %): exon 11 (56/120, 46·6%); exon 16 (7/17, 41·2%), exon 10 (14/47, 29·8%), and exon 13-15 (2/116, 1·7%)...
June 12, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/28603936/laryngeal-chondrosarcoma-mimicking-medullary-thyroid-carcinoma-on-fine-needle-aspiration-cytology-a-case-report-of-a-diagnostic-pitfall
#9
Shifteh Vahidi, Khalid Amin, Jimmie Stewart
Chondrosarcoma (CS) of larynx is a rare laryngeal tumor accounting about 1% of laryngeal malignancies. When CS arises from thyroid cartilage, it may clinically present as a thyroid nodule. Here we report a rare case of CS of thyroid cartilage misinterpreted as medullary thyroid carcinoma. The main aim of this case report is to emphasize the important role of accurate clinical history, appropriate physical examination, and proper localization of the tumor and clear definitive imaging in conjunction with interpretation of cytologic smears...
June 11, 2017: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/28589086/lymph-node-metastases-in-papillary-and-medullary-thyroid-carcinoma-are-independent-of-intratumoral-lymphatic-vessel-density
#10
Filipe Pereira, Sofia S Pereira, Marta Mesquita, Tiago Morais, Madalena M Costa, Pedro Quelhas, Carlos Lopes, Mariana P Monteiro, Valeriano Leite
BACKGROUND: Blood and lymph vessel invasion are well-recognized markers of tumor aggressiveness, as these are the routes that lead to metastases. Thyroid tumors, depending on the histological variant, tend to have distinctive biological behaviors and use different vascular routes to metastasize, yet the mechanisms underlying the metastatic process are still poorly understood. OBJECTIVES: The aim of this study was to assess how the lymph vessel density (LVD) in different histological types of thyroid tumors, and in their surrounding tissue, correlate with the presence of lymph node metastases (LNM) and tumor pathological features...
April 2017: European Thyroid Journal
https://www.readbyqxmd.com/read/28562377/the-value-of-18f-dopa-pet-ct-in-patients-with-medullary-thyroid-carcinoma-and-increased-calcitonin-values
#11
Anja T Golubić, Eva Pasini Nemir, Marijan Žuvić, Andrea Mutvar, Sanja Kusačić Kuna, Marija Despot, Tatjana Samardžić, Dražen Huić
AIM: The aim of this prospective observational study was to examine the benefit of a fluorine-18-L-dihydroxyphenylalanine (F-DOPA) PET/computed tomography (CT) scan in patients with medullary thyroid carcinoma (MTC) in terms of increased calcitonin levels. PATIENTS AND METHODS: Twenty-eight MTC patients after initial total thyreoidectomy with increasing follow-up calcitonin levels suggestive for active disease after negative conventional imaging findings (neck ultrasound or thorax, abdomen, pelvis multislice computed tomography as standard imaging) were scanned using F-DOPA PET/CT from November 2012 to April 2016...
May 30, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28556902/comparison-of-the-prognostic-values-of-selected-inflammation-based-scores-in-patients-with-medullary-thyroid-carcinoma-a-pilot-study
#12
Ke Jiang, Jianyong Lei, Canjun Li, Kunpeng Shu, Wenbin Li, Yuwei Zhang, Zhihui Li, Rixiang Gong, Jingqiang Zhu
BACKGROUND: The significance of inflammation based scores including the neutrophil-to-lymphocyte ratio (NLR), derived neutrophil-to-lymphocyte ratio (dNLR), platelet-to-lymphocyte ratio (PLR), lymphocyte-to-monocyte ratio (LMR), prognostic nutritional index (PNI), and plasma fibrinogen remains unclear in medullary thyroid carcinoma (MTC). We aimed to compare the prognostic value of these scores. METHODS: Seventy-eight patients newly diagnosed as MTC with operation in our institution from May 2009 to September 2016 were retrospectively evaluated...
May 29, 2017: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28553188/incidental-detection-of-synchronous-medullary-thyroid-carcinoma-with-bilateral-adrenal-pheochromocytoma-on-iodine-123-metaiodobenzylguanidine-scintigraphy-leading-to-diagnosis-of-multiple-endocrine-neoplasia-2a
#13
Asif Ali Fakhri, Paul David Rodrigue, Mustafa Aladin, Aun Hussain
We report a case of a 29-year-old female with the family history of medullary thyroid carcinoma (MTC) presenting with hematuria and tachycardia, who was found to have bilateral adrenal masses on abdominal computed tomography and biochemical testing compatible with pheochromocytoma. Iodine-123 (I-123) metaiodobenzylguanidine (MIBG) scintigraphy for preoperative planning prior to planned adrenalectomy revealed incidental synchronous unifocal MTC, along with expected bilateral adrenal pheochromocytomas. Pathology confirmed these findings, and subsequent genetic testing confirmed a rearranged during transfection proto-oncogene mutation on exon 11, confirming the clinical diagnosis of multiple endocrine neoplasia 2A (MEN 2A)...
April 2017: World Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/28552629/clinical-and-pathological-analysis-of-19-cases-of-medullary-thyroid-carcinoma-without-an-increase-in-calcitonin
#14
Qiufeng Zhou, Shuanglei Yue, Ye Cheng, Ju Jin, Haimiao Xu
BACKGROUND: Medullary thyroid carcinoma (MTC), defined as a malignant tumour with C-cell differentiation, is of neuroendocrine origin and is characterized by the synthesis and secretion of calcitonin (CT). MTC without CT secretion has been reported on rare occasions. The purpose of this study was to evaluate the histological, immunohistochemical, and molecular pathologic features as well as the clinical significance of non-secretory MTC (NCR-MTC). METHODS: A retrospective analysis of patients with NCR-MTC was performed...
May 25, 2017: Experimental and Toxicologic Pathology: Official Journal of the Gesellschaft Für Toxikologische Pathologie
https://www.readbyqxmd.com/read/28546130/a-study-of-foxa1-expression-in-thyroid-tumors
#15
Daisuke Nonaka
FoxA1 regulates a variety of tissues during embryogenesis and early life. In thyroid, FoxA1 expression has recently been shown in C cells and medullary thyroid carcinomas but not in follicular cells. FoxA1 has also been proposed as potential oncogene in anaplastic thyroid carcinomas. However, FoxA1 expression has not been extensively investigated in a spectrum of thyroid non-neoplastic lesions and tumors. A variety of thyroid tumors and lesions and their morphologic mimics were stained with monoclonal anti-FoxA1 antibody...
May 22, 2017: Human Pathology
https://www.readbyqxmd.com/read/28540691/expression-of-micrornas-in-thyroid-carcinoma
#16
Gaohong Zhu, Lijun Xie, Daniel Miller
MicroRNA (miRNA) are negative regulators of gene expression and subsequent protein production. This method of action translates into regulatory control over cellular processes, including development, signaling, metabolism, and apoptosis. A broad range of miRNA are shown to have abnormal expressions in thyroid cancers which could explain the pathology of tumor oncogenesis and disease progression. A review is conducted of the current research on miRNA dysregulation in thyroid cancers, including papillary thyroid carcinoma (PTC), follicular thyroid carcinoma (FTC), anaplastic thyroid cancer (ATC), and medullary thyroid carcinoma (MTC)...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28537865/a-nodule-on-the-scalp-as-the-first-sign-of-extranodal-disease-in-medullary-thyroid-carcinoma
#17
Jose Ramon Ferreres-Riera, Antonia Vinyals-Rioseco, Rosa Maria Penin-Mosquera, Octavio Servitje-Bedate, Joaquim Marcoval-Caus, Jose Manuel Mascaro-Galy, Susana Puig-Sarda, Antonio Macaya-Pascual, Angels Fabra-Fres
Medullary carcinoma of the thyroid gland accounts for only 5-10% of thyroid carcinomas. Also, metastases to the skin of malignant tumors are infrequently (2-9% of patients). In the case herein reported in a 64-year old woman, a metastatic nodule on the scalp was the presenting clinical manifestation of a medullary thyroid carcinoma. A comprehensive review of the literature was conducted for similar cases using PubMed. Only 18 cases of cutaneous metastases of medullary thyroid carcinoma have been previously reported in the literature, but skin lesions were the presenting complaint of the thyroid neoplasm in only three...
May 15, 2017: Dermatology Online Journal
https://www.readbyqxmd.com/read/28536894/can-medullary-thyroid-carcinoma-arise-in-thyroglossal-duct-cysts-a-search-for-parafollicular-c-cells-in-41-resected-cases
#18
Tracy Stein, Paari Murugan, Faqian Li, Mohamed I El Hag
Thyroglossal duct cysts (TGDCs) are present in ~7% of adults and develop from the midline migratory tract between the foramen cecum and anatomic location of the thyroid. Thyroid tissue can be identified in 2/3 of TGDCs, and up to 1% develop associated malignancy, 90% of which are papillary thyroid carcinoma. Cases of follicular and anaplastic carcinoma have been documented, but there are no reports of medullary thyroid carcinoma arising in a TGDC. This is presumably due to the distinct embryologic origin of parafollicular C-cells, from which medullary carcinoma arises...
May 23, 2017: Head and Neck Pathology
https://www.readbyqxmd.com/read/28529587/expression-of-claudin-1-4-and-7-in-thyroid-neoplasms
#19
Dinç Süren, Mustafa Yildirim, Alper Sayiner, Arsenal Sezgin Alikanoğlu, Irem Atalay, Umut Riza Gündüz, Vildan Kaya, Şeyda Gündüz, Mehmet Tahir Oruç, Cem Sezer
The distinction of thyroid carcinoma from benign thyroid neoplasm, as well as the subtyping of papillary carcinoma (PC) and follicular carcinoma (FC), may be performed histopathologically in the majority of cases. However, in certain cases, it is difficult to histopathologically distinguish between PC and FC, as well as follicular adenoma (FA), FC and the dominant nodule of multinodular goiter (MNG-DN). The present study aimed to determine the roles of the expression levels of the tight junction proteins claudin 1, 4 and 7 in the differential diagnosis of PC, FC, FA, MNG-DN, medullary carcinoma (MC) and anaplastic carcinoma (AC)...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28506418/timing-and-extension-of-lymphadenectomy-in-medullary-thyroid-carcinoma-a-case-series-from-a-single-institution
#20
Andrea Polistena, Alessandro Sanguinetti, Roberta Lucchini, Sergio Galasse, Massimo Monacelli, Stefano Avenia, Andrea Boccolini, Louis Banka Johnson, Nicola Avenia
BACKGROUND: Medullary thyroid carcinoma is an aggressive tumor and presents with significant morbidity and mortality and a high rate of lymph node metastases. The combination of total thyroidectomy and cervical lymphadenectomy is the essential treatment for those patients presenting with cervical lymph node metastases. MATERIALS AND METHODS: A retrospective analysis of 117 patients operated for medullary thyroid carcinoma over a period of 15 years at a single institution...
May 2017: International Journal of Surgery
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