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https://www.readbyqxmd.com/read/28821194/primary-benign-and-malignant-thyroid-neoplasms-with-signet-ring-cells-cytologic-histologic-and-molecular-features
#1
Nada A Farhat, Ayse M Onenerk, Jeffrey F Krane, Dora Dias-Santagata, Peter M Sadow, William C Faquin
Objectives: Signet ring cells (SRCs) can be seen in a variety of thyroid tumors and can pose a diagnostic pitfall on cytology. This study describes the cytologic, histomorphologic, and molecular aspects of a cohort of primary thyroid tumors with SRCs. Methods: A search was performed of the Massachusetts General Hospital and Brigham and Women's Hospital (Boston, MA) pathology archives for the keywords thyroid, signet, and signet ring features between 2000 and 2014...
September 1, 2017: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28819948/the-role-of-selenium-in-thyroid-gland-pathophysiology
#2
Michał Stuss, Marta Michalska-Kasiczak, Ewa Sewerynek
It is now assumed that proper functioning of the thyroid gland (TG), beside iodine, requires also a number of elements, including selenium, iron, zinc, copper, and calcium. In many cases, only an adequate supply of one of these microelements (e.g. iodine) may reveal symptoms resulting from deficits of other microelements (e.g. iron or selenium). Selenium is accounted to the trace elements of key importance for homeostasis of the human system, in particular, for the proper functioning of the immune system and the TG...
2017: Endokrynologia Polska
https://www.readbyqxmd.com/read/28818283/understanding-readmissions-following-operations-of-the-thyroid-and-parathyroid-glands
#3
Karole Collier, John Sataloff, Chris Wirtalla, Lindsay Kuo, Giorgos C Karakousis, Rachel R Kelz
BACKGROUND: In anticipation of bundled-payment models for thyroid and parathyroid disease, a better understanding of resource utilization following surgery is required. We sought to characterize the use of hospital services following such operations using an analysis of readmissions. METHODS: Patients age 18+years who underwent a thyroid or parathyroid operation in CA or NY (2008-2011) were classified by procedure type. Primary outcome was readmission within 90 days...
September 2017: American Journal of Surgery
https://www.readbyqxmd.com/read/28817195/vertical-off-centering-affects-organ-dose-in-chest-ct-evidence-from-monte-carlo-simulations-in-anthropomorphic-phantoms
#4
Natalia Saltybaeva, Hatem Alkadhi
PURPOSE: The objective of our study was to assess the effect of patient vertical off-centering on organ dose in chest CT with tube current modulation. METHODS: For this purpose, anthropomorphic phantoms representing adult male, female and overweight male were scanned on 192-slice CT scanner at eleven different vertical positions (maximal off-centering ± 5 cm). Monte Carlo simulations were performed for each of the investigated setup, using tube current values extracted from the raw data, in order to obtain 3D dose distributions...
August 17, 2017: Medical Physics
https://www.readbyqxmd.com/read/28816214/synchronous-malignancies-of-thyroglossal-duct-cyst-and-thyroid-gland
#5
Chinna Naik, Sandip Basu
Malignant involvement of thyroglossal duct cyst is rare, still rarer is the synchronous malignant involvement of the thyroid gland. Although the Sistrunk procedure is often regarded as adequate, controversy exists of the need for an additional total thyroidectomy and radioiodine ablative therapy, the decision of which depends upon the presence of (i) suspicious thyroid gland nodule; (ii) presence of lymphadenopathy; or (iii) a previous history of neck irradiation. We report a 47-year-old woman diagnosed with papillary carcinoma within a recurrent thyroglossal duct cyst with infiltration into surrounding soft tissues and a suspicious thyroid nodule of the left thyroid lobe with no regional lymph node involvement...
March 2017: National Medical Journal of India
https://www.readbyqxmd.com/read/28814477/iodine-excess-exposure-during-pregnancy-and-lactation-impairs-maternal-thyroid-function-in-rats
#6
Caroline Serrano-Nascimento, Rafael Salgueiro, Kaio Vitzel, Thiago Urgal Pantaleao, Vania Maria Correa da Costa, Maria Tereza Nunes
Adequate maternal iodine consumption during pregnancy and lactation guarantees normal thyroid hormones (TH) production, which is crucial to the development of the fetus. Indeed, iodine deficiency is clearly related to maternal hypothyroidism and deleterious effects in the fetal development. Conversely, the effects of iodine excess (IE) consumption on maternal thyroid function are still controversial. Therefore, this study aimed to investigate the impact of IE exposure during pregnancy and lactation periods on maternal hypothalamus-pituitary-thyroid axis...
August 16, 2017: Endocrine Connections
https://www.readbyqxmd.com/read/28813693/thyrotoxicity-of-arsenate-and-arsenite-on-juvenile-mice-at-organism-subcellular-and-gene-levels-under-low-exposure
#7
Hong-Jie Sun, Shi-Wei Li, Chao Li, Wen-Qian Wang, Hong-Bo Li, Lena Q Ma
Arsenic contamination in drinking water is a worldwide issue, posing threat to human health. Arsenic is an endocrine system disruptor, however, limited information is available regarding its long-term effects on thyroid endocrine system at low exposure. In this study, we assessed the thyroid toxicity of arsenate (AsV) and arsenite (AsIII) at 10-100 μg L(-1) in juvenile mice after 8-week of exposure via drinking water. After 1-2 week, AsV and AsIII had little influence on thyroxine (T4) level (56.3-64.7 μg L(-1)) in mouse blood compared to control mice at 57...
August 10, 2017: Chemosphere
https://www.readbyqxmd.com/read/28811931/non-traumatic-rupture-of-the-superior-thyroid-artery-with-concomitant-parathyroid-adenoma-and-multinodular-goiter
#8
Natsuko Hanashiro, Tsuneo Yamashiro, Yuko Iraha, Kennosuke Karube, Hirofumi Matsumoto, Sadayuki Murayama
Cervical hemorrhage due to non-traumatic, spontaneous rupture of the thyroid artery is rare, which usually results from arterial abnormalities or parathyroid or thyroid disorders. This report describes a 72-year-old woman who presented with a sore throat and slight neck swelling. Computed tomography (CT) revealed a large hematoma in the neck and mediastinum, due to extravasation from the major branch of the left superior thyroid artery. A follow-up CT the next day demonstrated that the extravasation had resolved...
July 2017: Acta Radiologica Open
https://www.readbyqxmd.com/read/28811561/analysis-of-risk-factors-of-rapid-thyroidal-radioiodine-131-turnover-in-graves-disease-patients
#9
Ruiguo Zhang, Jian Tan, Renfei Wang, Guizhi Zhang, Qiang Jia, Zhaowei Meng, Yueqian Zhang
Rapid iodine-131((131)I) turnover in the thyroid gland is an important feature of Graves' disease (GD) and also a strong predictor of radioiodine therapy failure. The aim of this study was to explore the predictors of rapid (131)I turnover. The clinical data on 2543 patients were retrospectively reviewed. Patients were divided into 2 groups depending on present or absent with rapid (131)I turnover defined as a 4-hour to 24-hour (131)I uptake ratio of ≥1. Overall, 590 cases (23.2%) had a rapid (131)I turnover...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28808080/characterization-of-the-human-thyroid-epigenome
#10
Celia Siu, Sam Michael Wiseman, Sitanshu Gakkhar, Alireza Heravi-Moussavi, Misha Bilenky, Annaick Carles, Thomas Sierocinski, Angela Tam, Eric Yang Zhao, Katayoon Kasaian, Richard A Moore, Andrew J Mungall, Blair Walker, Thomas Thomson, Marco A Marra, Martin Hirst, Steven Jones
The thyroid gland, necessary for normal human growth and development, functions as an essential regulator of metabolism by the production and secretion of appropriate levels of thyroid hormone. However, assessment of abnormal thyroid function may be challenging suggesting a more fundamental understanding of normal function is needed. One way to characterize normal gland function is to study the epigenome and resulting transcriptome within its constituent cells. This study generates the first published reference epigenomes for human thyroid from four individuals using ChIP-seq and RNA-seq...
August 14, 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/28806348/radioprotective-effect-of-vitamin-e-on-salivary-glands-after-radioiodine-therapy-for-differentiated-thyroid-cancer-a-randomized-controlled-trial
#11
Arun Upadhyaya, Pingping Zhou, Zhaowei Meng, Peng Wang, Guizhi Zhang, Qiang Jia, Jian Tan, Xue Li, Tianpeng Hu, Na Liu, Sen Wang, Xiaoxia Liu, Huiying Wang, Chunmei Zhang, Fengxiao Zhao, Ziyu Yan, Xiaoran Wang, Xuemeng Zhang, Wan Zhang
OBJECTIVES: This study aimed to examine the radioprotective effect of vitamin E on salivary glands after radioactive iodine (I) therapy in patients with differentiated thyroid cancer. PATIENTS AND METHODS: Eighty-two patients with differentiated thyroid cancer were enrolled in this study. They were divided randomly into four groups (control group: 22 cases, group A: 23 cases, group B: 22 cases, and group C: 15 cases) before postsurgical ablation therapy with 100 mCi I...
August 11, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28804863/personalised-immunomodulating-treatments-for-graves-disease-fact-or-fiction
#12
Tristan Mirko Struja, Alexander Kutz, Stefan Fischli, Christian Meier, Beat Müller, Philipp Schütz
Although Graves' disease has been recognised for more than 100 years, its physiopathological mechanisms are incompletely understood. Treatment strategies today mainly focus on suppression of thyroid hormone production by use of antithyroid drugs or radio-iodine, but neglect the underlying immunological mechanisms. Although Graves' disease is often seen as a prototype for an autoimmune mechanism, it is more likely to be a heterogeneous syndrome showing characteristics of both autoimmunity and immunodeficiency...
August 14, 2017: Swiss Medical Weekly
https://www.readbyqxmd.com/read/28803408/iodine-rich-herbs-and-potassium-iodate-have-different-effects-on-the-oxidative-stress-and-differentiation-of-th17-cells-in-iodine-deficient-nod-h-2-h4-mice
#13
Cheng-Han Gao, Jin-Qiao Qu, Xi-Yu Zhou, Tian-Shu Gao
Iodine-rich herbs such as seaweed, kelp, and sea tangle were widely used to treat various types of goiter with good effect and without any adverse side effects in China. When compared with potassium iodate (PI), iodine-rich herbs had a positive effect on the recovery of goiter resulting from iodine deficiency without any obvious harmful effects. In NOD.H-2(h4) mice, an autoimmune thyroiditis-prone model, iodine excess can increase infiltration of lymphocytes and structural damage of the thyroid follicles, hence resulting in thyroiditis...
August 12, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28803070/sex-disparities-in-cancer-incidence-in-jiashan-county-china-1995-2014
#14
Xiyi Jiang, Shaofang Cai, Yunqing Hu, Ding Ye, Qilong Li, Kun Chen, Mingjuan Jin
PURPOSE: To describe the sex-specific incidence rates and the male-to-female incidence-rate ratios (IRRs) of different cancer types, and to explore the corresponding sex disparities in an area of Eastern China. METHODS: We used data from the Cancer Registry in Jiashan County, and calculated the sex-specific age-standardized (2010 China standard population) incidence rates and the male-to-female IRRs for different cancer types during the period 1995-2014. RESULTS: The age-standardized incidence rates of all cancers for the whole period 1995-2014 were 151...
August 10, 2017: Cancer Epidemiology
https://www.readbyqxmd.com/read/28799665/effects-of-chronic-cadmium-exposure-on-metamorphosis-skeletal-development-and-thyroid-endocrine-disruption-in-chinese-toad-bufo-gargarizans-tadpoles
#15
Nailiang Sun, Hongyuan Wang, Zongqi Ju, Hongfeng Zhao
The study examined the effects of chronic cadmium exposure on metamorphosis, body size, thyroid gland, and skeletal development of Chinese toad (Bufo gargarizans) tadpoles. Tadpoles were exposed to cadmium concentrations at 0, 5, 10, 50,100 and 500 μg/L from Gonser stage 26 to Gosner stage 46 of completion of metamorphosis. Our results showed 100 and 500 μg/L cadmium concentrations increased mortality and decelerated metamorphosis rate. In addition, significant body size reduction at Gosner stage 42 was observed at 100 and 500 μg/L cadmium treatments (p < 0...
August 11, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28799187/safety-evaluation-of-combination-carboplatin-and-toceranib-phosphate-palladia-in-tumour-bearing-dogs-a-phase-i-dose-finding-study
#16
R M Wouda, S E Hocker, M L Higginbotham
Combining conventional cytotoxic maximum tolerated dose (MTD) chemotherapy with low-dose metronomic and/or anti-angiogenic agents is a exciting area of oncologic research. The objective of this study was to establish the MTD, safety and adverse event (AE) profile of 1 such drug combination. This prospective phase I dose-finding clinical trial assumed an open-label 3 + 3 cohort design. Client-owned dogs with 1 or more cytologically and/or histologically confirmed and macroscopically measurable, naive or recurrent, malignant tumours, were enrolled...
August 10, 2017: Veterinary and Comparative Oncology
https://www.readbyqxmd.com/read/28797983/rationalisation-of-the-irrational-neuropathological-basis-of-hypothyroidism-olfaction-disorders-paradox-experimental-study
#17
Nazan Aydin, Leyla Ramazanoglu, Mehmet Resid Onen, Ilhan Yilmaz, Mehmet Dumlu Aydin, Konca Altinkaynak, Muhammet Calik
OBJECTIVE: Hypothyroidism is defined as an underactive thyroid gland and one of the reasons for inadequate stimulation of thyroid is dysfunction of the hormone regulating brain centers. Olfaction disorders have been considered as a problem in hypothyroidism. It has been hypothesised that olfaction disorders reduce olfactory stimulation and diminished olfactory stimulus may trigger hypothyroidism. In this study an examination was made of the thyroid hormone levels, histological features of thyroid glands and vagal nerve network degradation in an experimental animal model of olfactory bulbectomy (OBX)...
August 7, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28790241/-amyloidoma-adjacent-to-the-thoracic-vertebral-body-developed-into-systemic-amyloid-light-chain-amyloidosis
#18
Kyoko Tanaka, Hideto Goto, Shuhei Ikeda, Nami Masumoto, Katsuya Watanabe, Motofumi Tsubakihara
Amyloidoma is very rare case of amyloidosis, and seldom develop into systemic disease. We report a case of an 82-year-old man who was referred to our hospital because of an oppressive feeling in the upper chest. Chest computed tomography showed a tumor on thoracic vertebral body. Percutaneous needle biopsy showed pathological findings of AL amyloidosis. No obvious systemic finding was confirmed, and the tumor was diagnosed as amyloidoma. After a 1-year observation, heart amyloidosis was appeared, then 6 months later he died...
August 2017: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/28790138/amifostine-does-not-protect-thyroid-cancer-cells-in-dna-damaging-in-vitro-models
#19
Joanna Klubo-Gwiezdzinska, John Costello, Kirk Jensen, Aneeta Patel, Rok Tkavc, Douglas Van Nostrand, Kenneth Burman, Leonard Wartofsky, Vasily Vasko
BACKGROUND: Amifostine is a potent scavenger of reactive oxygen species that is used for the salivary gland protection during therapy with radioactive iodine for thyroid cancer. There are no data on the potential effect of amifostine on thyroid cancer cells. METHODS: We investigated the effects of the active form of amifostine (WR-1065) on the response of thyroid cancer cells to treatment with DNA damaging agents. WR-1065 was examined in human thyroid cancer cell lines (FTC133, TPC1, BCPAP and C643) and embryonic fibroblast cells NIH3T3...
August 8, 2017: Endocrine Connections
https://www.readbyqxmd.com/read/28782797/in-situ-preservation-of-the-inferior-parathyroid-gland-during-central-neck-dissection-for-papillary-thyroid-carcinoma
#20
J B Wang, K Wu, L H Shi, Y Y Sun, F B Li, L Xie
BACKGROUND: Postoperative hypocalcaemia due to dysfunction of the parathyroid glands is the most common complication after total thyroidectomy plus central neck dissection (CND). There is a lack of surgical techniques described to help preserve the inferior parathyroid gland in situ during CND. The objective of this study was to introduce the 'TBP layer' (layer of thymus-blood vessel-inferior parathyroid gland) concept for preserving the inferior parathyroid gland in situ during CND, and to evaluate its effectiveness...
August 7, 2017: British Journal of Surgery
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