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https://www.readbyqxmd.com/read/28081315/the-association-of-papillary-thyroid-cancer-with-microcalcification-in-thyroidnodules-with-indeterminate-cytology-based-on-fine-needle-aspiration-biopsy
#1
İbrahim Ali Özemir, Barış Bayraktar, Ender Anılır, Kıvılcım Orhun, Tunç Eren, Jülide Sağıroğlu, Ayşe Bahar Ceyran, Rafet Yiğitbaşı, Orhan Alimoğlu
BACKGROUND/AIM: Microcalcifications are generally accepted as highly specific for thyroid malignancy, especially for papillary thyroid carcinoma (PTC). The aim of this study was to determine the significance of microcalcification within nodules that were classified as being of “indeterminate cytology” (IC) according to fine-needle aspiration biopsy. MATERIALS AND METHODS: Patients who underwent thyroidectomy between January 2010 and 2013 were included in the study...
December 20, 2016: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28071986/evaluation-of-a-two-year-routine-application-of-molecular-testing-of-thyroid-fine-needle-aspirations-fna-using-a-7-gene-panel-in-a-primary-referral-setting-in-germany
#2
Markus Eszlinger, Katharina Böhme, Maha Ullmann, Fabian Görke, Udo Siebolts, Anna Neumann, Christiane Franzius, Sabine Adam, Thomas Molwitz, Christian Landvogt, Bassam Amro, Anja Hach, Berit Feldmann, Dieter Graf, Antje Wefer, Rainer Niemann, Catharina Bullmann, Günther Klaushenke, Reinhard Santen, Gregor Tönshoff, Velimir Ivancevic, Andreas Kögler, Eberhard Bell, Bernd Lorenz, Gerald Kluge, Christoph Hartenstein, Ilka Ruschenburg, Ralf Paschke
BACKGROUND: Major differences with respect to the diagnostic performance of a "ruling in" approach in the pre-surgical diagnosis of indeterminate thyroid fine needle aspirations (FNAs) have been reported. Therefore, the aim of this prospective multicenter study was to investigate the specific diagnostic impact of mutation testing using a 7-gene-panel in a routine primary referral setting analyzing FNAs from endocrinology and nuclear medicine practices in Germany. METHODS: RNA and DNA was extracted from 564 routine air-dried FNA smears obtained from 64 physicians and cytologically graded by one experienced cytopathologist...
January 10, 2017: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/28071623/differentiated-thyroid-cancer-in-iran-initial-observations-histological-features-management-of-the-disease-and-tumor-recurrence-a-review-of-1689-cases
#3
M Moslehi, Z Shahi, S Badihian, P Jalalpour, M Sedghian, G Motamedi, G Tavakol
AIM: The main objective of this study was to define some histopathological aspects of differentiated thyroid cancer (DTC), describe the disease management, and evaluate potential predicting factors for tumor recurrence in Iran. MATERIALS AND METHODS: Medical records of 1689 patients of DTC treated over a 15-year period at a referral hospital located in the central region of Iran were reviewed retrospectively. RESULTS: The female/male ratio was 3...
April 2016: Indian Journal of Cancer
https://www.readbyqxmd.com/read/28065941/di2-ethylhexyl-phthalate-disrupts-thyroid-hormone-homeostasis-through-activating-the-ras-akt-trhr-pathway-and-inducing-hepatic-enzymes
#4
Hanfeng Ye, Mei Ha, Min Yang, Ping Yue, Zhengyuan Xie, Changjiang Liu
Di(2-ethylhexyl) phthalate (DEHP), as a widespread environmental pollutant and an endocrine disruptor, can disturb the homeostasis of thyroid hormones (THs). In order to elucidate roles of the MAPK and PI3K/Akt pathways and hepatic enzymes in thyroid-disrupting effects of DEHP, Sprague-Dawley rats were dosed with DEHP by gavage for 30 consecutive days; Nthy-ori 3-1 cells were treated with DEHP with NAC, k-Ras siRNA or inhibitors (U0126 and wortmannin). Results showed that DEHP led to histopathologic changes in rat thyroid and liver, such as the decrease in thyroid follicular cavity diameter, hepatocyte edema...
January 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28064410/detecting-n-ras-q61r-mutated-thyroid-neoplasias-by-immunohistochemistry
#5
A Crescenzi, F Fulciniti, M Bongiovanni, L Giovanella, Pierpaolo Trimboli
Recently, the immunohistochemistry (IHC) for N-RAS Q61R has been developed and commercialized for clinical practice. Here, we investigated the reliability of IHC to identify N-RAS Q61R mutated thyroid neoplasia. A series of 24 consecutive thyroid lesions undergone surgery following indeterminate cytology were enrolled. Paraffin sections were stained for IHC using the rabbit monoclonal anti-human N-RAS Q61R, clone SP174. N-RAS mutations in codon 61 were also investigated by automated sequencing. At histology, 12 cases of follicular carcinoma, cytologically defined as follicular lesions, 1 papillary cancer, 7 follicular adenomas, and 4 hyperplastic nodules were found...
January 7, 2017: Endocrine Pathology
https://www.readbyqxmd.com/read/28057768/tert-biology-and-function-in-cancer-beyond-immortalization
#6
Ana Pestana, João Vinagre, M Sobrinho-Simões, P Soares
Evasion of replicative senescence and proliferation without restriction, sometimes designated as immortalization, is one of cancer hallmarks that may be attained through reactivation of telomerase in somatic cells. In contrast to most normal cells in which there is lack of telomerase activity, upregulation of TERT transcription/activity is detected in 80 to 90% of malignant tumours. In several types of cancer there is a relationship between the presence of TERTp mutations, TERT mRNA expression and clinico-pathological features but the biological bridge between the occurrence of TERTp mutations and the aggressive/invasive features displayed by the tumours remains unidentified...
January 5, 2017: Journal of Molecular Endocrinology
https://www.readbyqxmd.com/read/28054519/radioiodine-as-an-adjuvant-therapy-and-its-role-in-follow-up-of-differentiated-thyroid-cancer
#7
REVIEW
S Padma, P Shanmuga Sundaram
Papillary and follicular cancers of thyroid are the most common varieties of differentiated thyroid cancers exhibiting excellent long-term prognosis when carefully managed. Being a slow-growing malignancy, guidelines exist on the staging, preoperative risk stratification, and management of these cancers to increase the overall survival of these patients. Radioactive iodine has a central role in differentiated thyroid malignancies. It has the same physical properties as stable iodine, thus both normal and malignant thyrocytes cannot differentiate radioactive from stable iodine...
July 2016: Journal of Cancer Research and Therapeutics
https://www.readbyqxmd.com/read/28052718/thyroid-nodule-size-at-ultrasound-as-a-predictor-of-malignancy-and-final-pathologic-size
#8
Allison Cavallo, Daniel N Johnson, Michael Geoffrey White, Saaduddin Siddiqui, Tatjana Antic, Melvy Mathew, Raymon H Grogan, Peter Angelos, Edwin L Kaplan, Nicole A Cipriani
BACKGROUND: Thyroid-related mortality has remained constant despite increasing incidence of thyroid carcinoma. Most thyroid nodules are benign, therefore, ultrasound and fine needle aspiration (FNA) are integral in cancer screening. We hypothesize that increased nodule size at ultrasound does not predict malignancy and correlation between nodule size at ultrasound and pathologic exam is good. METHODS: Resected thyroids with preoperative ultrasounds were identified...
January 4, 2017: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/28049366/primary-thyroid-carcinoma-with-low-risk-histology-and-distant-metastases-clinico-pathologic-and-molecular-characteristics
#9
Bin Xu, R Michael Tuttle, Mona Sabra, Ian Ganly, Ronald Ghossein
BACKGROUND: Distant metastases (DM) are a rare occurrence in well differentiatedwell-differentiated thyroid carcinoma. The aim of our study was to analyze the clinical, pathologic, and molecular features of primary thyroid carcinoma with low risk histology that develop DM. METHODS: Detailed clinico-pathologic review and targeted next generation sequencing were performed on a cohort of well-differentiatedwell-differentiated thyroid carcinoma lacking gross extrathyroidal extension, extensive vascular invasion or significant lymph node metastases but exhibiting distant metastases...
January 3, 2017: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/28039458/multicellular-spheroids-from-normal-and-neoplastic-thyroid-tissues-as-a-suitable-model-to-test-the-effects-of-multikinase-inhibitors
#10
Valentina Cirello, Valentina Vaira, Elisa Stellaria Grassi, Valeria Vezzoli, Dario Ricca, Carla Colombo, Silvano Bosari, Leonardo Vicentini, Luca Persani, Stefano Ferrero, Laura Fugazzola
Multicellular three-dimensional (3D) spheroids represent an experimental model that is intermediate in its complexity between monolayer cultures and patients' tumor. In the present study, we characterize multicellular spheroids from papillary (PTC) and follicular (FTC) thyroid cancers and from the corresponding normal tissues. We show that these 3D structures well recapitulate the features of the original tissues, in either the differentiated and "stem-like" components. As a second step, we were aimed to test the effects of a small multikinase inhibitor, SP600125 (SP), previously shown to efficiently induce cell death in undifferentiated thyroid cancer monolayer cultures...
December 26, 2016: Oncotarget
https://www.readbyqxmd.com/read/28028338/cytological-diagnosis-of-pediatric-thyroid-nodule-in-perspective-of-the-bethesda-system-for-reporting-thyroid-cytopathology
#11
Chayanika Pantola, Sanjay Kala, Lubna Khan, Saurabh Pantola, Mahendra Singh, Sumanlata Verma
BACKGROUND: Thyroid nodule is one of the most common endocrinopathies occurring children and adolescents. Though thyroid nodule is rare in the pediatric age group, the rate of malignancy is much higher in this age group compared to adult population. AIM: The objective is to study the application of The Bethesda System for Reporting Thyroid Cytopathology (TBSRTC) in pediatric patients and compare the findings with histology. MATERIALS AND METHODS: A total of 218 cases younger than 18 years were studied in a 4-year period from August 2010 to July 2014...
October 2016: Journal of Cytology
https://www.readbyqxmd.com/read/28025634/regional-variation-across-canadian-centers-in-radioiodine-administration-for-thyroid-remnant-ablation-in-well-differentiated-thyroid-cancer-diagnosed-in-2000-2010
#12
I Rachinsky, M Rajaraman, W D Leslie, A Zahedi, C Jefford, A McGibbon, J E M Young, K A Pathak, M Badreddine, S De Brabandere, H Fong, S Van Uum
Background. Use of radioactive iodine (RAI) ablation has been reported to vary significantly between studies. We explored variation in RAI ablation care patterns between seven thyroid cancer treatment centers in Canada. Methods. The Canadian Collaborative Network for Cancer of the Thyroid (CANNECT) is a collaborative registry to describe and analyze patterns of care for thyroid cancer. We analyzed data from seven participating centers on RAI ablation in patients diagnosed with well-differentiated (papillary and follicular) thyroid cancer between 2000 and 2010...
2016: Journal of Thyroid Research
https://www.readbyqxmd.com/read/28024116/mulberry-cells-in-the-thyroid-warthin-finkeldey-like-cells-in-hashimoto-thyroiditis-associated-lymphoma
#13
Razvan Lapadat, Moon Woo Nam, Swati Mehrotra, Milind Velankar, Stefan E Pambuccian
Warthin-Finkeldey type giant cells were first described in autopsies performed on young children who died during the highly lethal measles epidemic in Palermo during the winter of 1908. The cells had 8-15 nuclei without identifiable cytoplasm within the germinal centers of lymphoid organs resembling megakaryocytes. We describe a case of Hashimoto thyroiditis with an enlarging substernal throid mass. The resection specimen contained many Warthin-Finkeldey-Like Cells (WFLC) in an extranodal marginal zone lymphoma (MALT type) with focal transformation to diffuse large B-cell lymphoma...
December 26, 2016: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/28019102/arecoline-aggravates-hypothyroidism-in-metabolic-stress-in-mice
#14
Romi Dasgupta, Aniruddha Chatterjee, Supriti Sarkar, B R Maiti
Millions of people consume betel nut for increased capacity of work. It contains arecoline which is highly toxic and has several untoward side effects on endocrine functions. In this article, the role of arecoline on thyroid function under metabolic stress was investigated in mice. Water or food-deprivation, each for 5 days, caused ultrastructural degeneration of thyro-follicular cells, evident from pycnotic nuclei, scanty rough endoplasmic reticulum and mitochondria followed by depletion of blood serum T3 and T4 levels with alteration of TSH level as compared with control...
December 26, 2016: Archives of Physiology and Biochemistry
https://www.readbyqxmd.com/read/28018768/rare-intradural-cervical-nerve-root-metastasis-of-follicular-thyroid-carcinoma
#15
Joseph Keen, Elena Milosavljevic, George Hanna, Vadim Gospodarev, Ravi Raghavan, Samer Ghostine
Intradural extramedullary nerve root metastasis is extremely unusual with only a handful of cases reported, and it presents most commonly in the thoracic and lumbosacral regions. We report the first case of metastasis to a ventral cervical nerve root in a patient with low-grade follicular thyroid carcinoma thought to be in remission for several years. Histopathology demonstrated malignant transformation and invasion of the nerve root. This case underscores that any history of malignancy regardless of staging, grading, or remission status should raise the suspicion of metastasis as it can mimic other spine and nerve sheath tumors and represent malignant transformation...
November 24, 2016: Curēus
https://www.readbyqxmd.com/read/28017809/prevalence-of-contralateral-tumors-in-patients-with-follicular-variant-of-papillary-thyroid-cancer
#16
Michael Sullivan, Paul H Graham, Erik K Alexander, Daniel T Ruan, Matthew A Nehs, Atul A Gawande, Francis D Moore, Brooke E Howitt, Kyle C Strickland, Jeffrey F Krane, Justine A Barletta, Nancy L Cho
BACKGROUND: Thyroid lobectomy alone is increasingly being performed for patients with encapsulated follicular variant of papillary thyroid carcinoma (fvPTC). However, the prevalence of contralateral disease in these patients is unknown. Here, we investigated the presence of synchronous disease in fvPTC to improve decision making regarding the extent of surgical resection and need for surveillance. STUDY DESIGN: We performed a retrospective review of patients who underwent thyroid surgery from October 2009 to February 2013 with a diagnosis of fvPTC as their primary lesion...
December 22, 2016: Journal of the American College of Surgeons
https://www.readbyqxmd.com/read/28011236/micrornas-in-thyroid-development-function-and-tumorigenesis
#17
Cesar Seigi Fuziwara, Edna Teruko Kimura
MicroRNAs (miRNAs) are important post-transcriptional regulators of gene expression that modulate the vast majority of cellular processes. During development, the correct timing and expression of miRNAs in the tissue differentiation is essential for organogenesis and functionality. In thyroid gland, DICER and miRNAs are necessary for accurately establishing thyroid follicles and hormone synthesis. Moreover, DICER1 mutations and miRNA deregulation observed in human goiter influence thyroid tumorigenesis. The thyroid malignant transformation by MAPK oncogenes is accompanied by global miRNA changes, with a marked reduction of "tumor-suppressor" miRNAs and activation of oncogenic miRNAs...
December 21, 2016: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28008451/values-of-molecular-markers-in-the-differential-diagnosis-of-thyroid-abnormalities
#18
REVIEW
T M P B Tennakoon, M Rushdhi, A D C U Ranasinghe, R S Dassanayake
INTRODUCTION: Thyroid cancer (TC), follicular adenoma (FA) and Hashimoto's thyroiditis (HT) are three of the most frequently reported abnormalities that affect the thyroid gland. A frequent co-occurrence along with similar histopathological features is observed between TC and FA as well as between TC and HT. The conventional diagnostic methods such as histochemical analysis present complications in differential diagnosis when these abnormalities occur simultaneously. Hence, the authors recognize novel methods based on screening genetic defects of thyroid abnormalities as viable diagnostic and prognostic methods that could complement the conventional methods...
December 22, 2016: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/28008156/genomic-binding-of-pax8-pparg-fusion-protein-regulates-cancer-related-pathways-and-alters-the-immune-landscape-of-thyroid-cancer
#19
Yanxiao Zhang, Jingcheng Yu, Vladimir Grachtchouk, Tingting Qin, Carey N Lumeng, Maureen A Sartor, Ronald J Koenig
PAX8-PPARG fusion protein (PPFP) results from a t(2;3)(q13;p25) chromosomal translocation, is found in 30% of follicular thyroid carcinomas, and demonstrates oncogenic capacity in transgenic mice. A PPARG ligand, pioglitazone, is highly therapeutic in mice with PPFP thyroid cancer. However, only limited data exist to characterize the binding sites and oncogenic function of PPFP, or to explain the observed therapeutic effect of pioglitazone. Here we used our previously characterized transgenic mouse model of PPFP follicular thyroid carcinoma to identify PPFP binding sites in vivo using ChIP-seq, and to distinguish genes and pathways regulated directly or indirectly by PPFP with and without pioglitazone treatment via integration with RNA-seq data...
December 20, 2016: Oncotarget
https://www.readbyqxmd.com/read/28003924/intrathyroidal-clear-cell-tumor-of-parathyroid-origin-with-review-of-literature
#20
Daniela Pirela, Daniela Treitl, Siba El Hussein, Robert Poppiti, Thomas Mesko, Alex Manzano
Water-clear cell adenoma (WCCA) of the parathyroid gland is an exceedingly rare neoplasm. To date, 17 cases have been reported in the literature, with only one of them being intrathyroidal. Here we report a case of a 34-year-old woman who presented for evaluation of a goiter and was found to have a thyroid nodule and abnormal thyroid function tests (TFT). Fine needle aspiration biopsy of the nodule revealed thyroid follicular cells without atypia and subsequent Afirma® Gene Expression Classifier (GEC) testing results were suspicious for malignancy...
2016: Case Reports in Pathology
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