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Sébastien Verdickt Department of Endocrinology, University Hospitals of Leuven, Leuven, Belgium

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Falco Van Nes Department of Endocrinology, University Hospitals of Leuven, Leuven, Belgium

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Carolien Moyson Department of Endocrinology, University Hospitals of Leuven, Leuven, Belgium

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Toon Maes Department of Endocrinology, Imeldaziekenhuis Bonheiden, Bonheiden, Belgium

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Paul Van Crombrugge Department of Endocrinology, OLV Ziekenhuis Aalst-Asse-Ninove, Aalst, Belgium

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Annick Van den Bruel Department of Endocrinology, AZ Sint Jan Brugge, Brugge, Belgium

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Brigitte Decallonne Department of Endocrinology, University Hospitals of Leuven, Leuven, Belgium

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( 1 ). Several studies identified pre-treatment parameters that could help in the prediction of the thyroid functional outcome such as age, gender, thyroid gland volume, free thyroxine (fT4) and free triiodothyronine (fT3) at diagnosis, and thyroid

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Josef Köhrle Institut für Experimentelle Endokrinologie, Charité Campus Virchow-Klinikum (CVK), Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany

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thyroid gland for still unknown reasons and by unclear pathogenic mechanisms. Thus, it comes as no surprise that among millions of mainly female patients treated for autoimmune thyroiditis during their reproductive age and later on a significant fraction

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Nora Dehina Institute for Experimental Endocrinology, Charité - Universitätsmedizin Berlin, Berlin
Department of Ophthalmology, University Hospital Essen, Essen, Germany

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Peter Josef Hofmann Institute for Experimental Endocrinology, Charité - Universitätsmedizin Berlin, Berlin

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Thomas Behrends Institute for Experimental Endocrinology, Charité - Universitätsmedizin Berlin, Berlin

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Anja Eckstein Department of Ophthalmology, University Hospital Essen, Essen, Germany

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Lutz Schomburg Institute for Experimental Endocrinology, Charité - Universitätsmedizin Berlin, Berlin

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-specific symptoms and quality of life were successfully improved in the Se-treated group, highlighting the importance of this trace element for thyroid gland and the immune system. The positive effects lasted even longer than the active supplementation phase

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George J. Kahaly Department of Medicine I, Johannes Gutenberg University (JGU) Medical Center, Mainz, Germany

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Luigi Bartalena Department of Medicine and Surgery, University of Insubria, Varese, Italy

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Lazlo Hegedüs Department of Endocrinology and Metabolism, Odense University Hospital, Odense, Denmark

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Laurence Leenhardt Thyroid and Endocrine Tumors Unit, Pitié Salpêtrière Hospital, Sorbonne University, Paris, France

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Kris Poppe Endocrine Unit, CHU Saint-Pierre, Université Libre de Bruxelles (ULB), Brussels, Belgium

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Simon H. Pearce Department of Endocrinology, Institute of Genetic Medicine, Newcastle University, Newcastle upon Tyne, United Kingdom

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-CT of the thyroid gland. Thyroid US is a convenient, noninvasive, rapid, and accurate tool in the initial work-up of GD patients. It aids in the diagnosis, without exposing the patient to ionizing irradiation, and assists in determining the underlying

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Shinsuke Shinkai Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Shizuoka, Japan

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Kenji Ohba Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Shizuoka, Japan
Medical Education Center, Hamamatsu University School of Medicine, Shizuoka, Japan

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Kennichi Kakudo Department of Pathology and Thyroid Disease Center, Izumi City General Hospital, Osaka, Japan

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Takayuki Iwaki Department of Pharmacology, Hamamatsu University School of Medicine, Shizuoka, Japan

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Yoshihiro Mimura Department of Internal Medicine, American Hospital of Paris, Neuilly sur Seine, France

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Akio Matsushita Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Shizuoka, Japan

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Go Kuroda Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Shizuoka, Japan

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Yuki Sakai Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Shizuoka, Japan

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Nobuhiko Nishino Department of Surgery, Maruyama Hospital, Shizuoka, Japan

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Kazuo Umemura Medical Education Center, Hamamatsu University School of Medicine, Shizuoka, Japan
Department of Pharmacology, Hamamatsu University School of Medicine, Shizuoka, Japan

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Takafumi Suda Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Shizuoka, Japan

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Shigekazu Sasaki Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Shizuoka, Japan

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-old Japanese man with no family history of benign or malignant thyroid neoplasms, and without exposure to radiation, was found to have a nodule on the right lobe of his thyroid gland from ultrasonography (US) during an annual checkup. Fine-needle aspiration

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Peter Laurberg Department of Endocrinology, Aalborg Hospital, Aalborg

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Nils Knudsen Medical Clinic I, Bispebjerg Hospital, Copenhagen, Denmark

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Stig Andersen Department of Endocrinology, Aalborg Hospital, Aalborg

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Allan Carlé Department of Endocrinology, Aalborg Hospital, Aalborg

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Inge Bülow Pedersen Department of Endocrinology, Aalborg Hospital, Aalborg

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Jesper Karmisholt Department of Endocrinology, Aalborg Hospital, Aalborg

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Important interaction exists between thyroid function, weight control, and obesity. Several mechanisms seem to be involved, and in studies of groups of people the pattern of thyroid function tests depends on the balance of obesity and underlying thyroid disease in the cohort studied. Obese people with a normal thyroid gland tend to have activation of the hypothalamic-pituitary-thyroid axis with higher serum TSH and thyroid hormones in serum. On the other hand, small differences in thyroid function are associated with up to 5 kg difference in body weight. The weight loss after therapy of overt hypothyroidism is caused by excretion of water bound in tissues (myxoedema). Many patients treated for hyperthyroidism experience a gain of more weight than they lost during the active phase of the disease. The mechanism for this excessive weight gain has not been fully elucidated. New studies on the relation between L-T<sub>3</sub> therapy and weight control are discussed. The interaction between weight control and therapy of thyroid disease is important to many patients and it should be studied in more detail.

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Hideyuki Imai H Imai, Department of Internal Medicine, Ito Hospital, Tokyo, Japan

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Natsuko Watanabe N Watanabe, Department of Internal Medicine, Ito Hospital, Tokyo, Japan

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Rei Hirose R Hirose, Department of Internal Medicine, Ito Hospital, Tokyo, Japan

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Masakazu Koshibu M Koshibu, Department of Internal Medicine, Ito Hospital, Tokyo, Japan

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Masahiro Ichikawa M Ichikawa, Department of Internal Medicine, Ito Hospital, Tokyo, Japan

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Akiko Sankoda A Sankoda, Department of Internal Medicine, Ito Hospital, Tokyo, Japan

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Shigenori Hiruma S Hiruma, Department of Internal Medicine, Ito Hospital, Tokyo, Japan

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Nami Suzuki N Suzuki, Department of Internal Medicine, Ito Hospital, Tokyo, Japan

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Masako Matsumoto M Matsumoto, Department of Internal Medicine, Ito Hospital, Tokyo, Japan

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Miho Fukushita M Fukushita, Department of Internal Medicine, Ito Hospital, Tokyo, Japan

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Ai Yoshihara A Yoshihara, Department of Internal Medicine, Ito Hospital, Tokyo, Japan

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Jaeduk yoshimura Noh J yoshimura Noh, Department of Internal Medicine, Ito Hospital, Tokyo, Japan

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Kiminori Sugino K Sugino, Department of Surgery, Ito Hospital, Tokyo, Japan

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Koichi Ito K Ito, Department of Surgery, Ito Hospital, Tokyo, 150-8308, Japan

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Objective: There are few reports of subacute thyroiditis (SAT) during pregnancy. This study aimed to clarify the clinical characteristics of SAT in pregnant patients. Methods and results: Seven patients diagnosed with SAT during pregnancy at our institution from January 2004 to December 2021 were identified, and their clinical findings were retrospectively examined. At SAT diagnosis, the median age was 34 [range 31-42] years, the median duration of pregnancy was 5 [4-24] weeks, and all patients had neck pain but no fever. On laboratory examination, median (range) free thyroxine, free triiodothyronine, and C-reactive protein levels were 2.66 (1.14-7.77) ng/dL, 7.1 (3.3-16.1) pg/mL, and 2.22 (0.42-5.79) mg/dL, respectively, and all patients had a hypoechoic lesion of the thyroid gland. Three patients (43%) were treated with steroids, and 3 patients (43%) received replacement therapy with levothyroxine for hypothyroidism following destructive thyroiditis. There were no pregnancy complications in any of the cases. These 7 patients (pregnancy group) were compared with 217 non-pregnant female patients (non-pregnancy group) aged 31 to 42 years who were diagnosed with SAT at our institution from 2016 to 2019. The frequency of body temperatures above 37°C was lower in the pregnancy group than in the non-pregnancy group (0% vs. 65%). Conclusion: Patients who develop SAT during pregnancy may have less fever than non-pregnant patients with SAT. There were no pregnancy complications in the pregnancy group in this study. This suggests that adverse pregnancy outcomes may be avoided by appropriate management of SAT, including hypothyroidism after destructive thyroiditis.

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Sravanthi Nagavalli Division of Endocrinology and Metabolism, Torrance, CA, USA

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Marelle Yehuda Division of Endocrinology and Metabolism, Torrance, CA, USA

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Laron W. McPhaul Department of Pathology and Laboratory Medicine, Harbor-UCLA Medical Center, Torrance, CA, USA

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Andrew G. Gianoukakis Division of Endocrinology and Metabolism, Torrance, CA, USA

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separation between the lesion and the thyroid gland (Fig. 2 c, d). Fig. 3 Histology: spindle cells on FNA. a Spindle cells on low power. b Spindle cells on high power. c Spindle cells positive for S-100 (brown, color in online version only

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Juan Bernal
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University of Madrid and were co-founders of the Instituto de Investigaciones Biomédicas. Prof. Escobar participated in numerous studies on thyroid gland physiology and on thyroid hormone metabolism. He and Gabriela made fundamental contributions to

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Rodrigo Moreno-Reyes Department of Nuclear Medicine, Hospital Erasme, Université Libre de Bruxelles, Brussels, Belgium

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Ulla Feldt-Rasmussen Department of Endocrinology and Metabolism, University Hospital Rigshospitalet, and Faculty of Ηealth and Clinical Sciences, University of Copenhagen, Copenhagen, Denmark

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Agnieszka Piekiełko-Witkowska Centre of Postgraduate Medical Education, Centre of Translational Research, Department of Biochemistry and Molecular Biology, Warsaw, Poland: Basic Lead of the European Society of Endocrinology Focus Area on Thyroid

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Adriana Gaspar da Rocha Public Health Unit, ULS Baixo Mondego, Figueira da Foz, Portugal Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP), Porto, Portugal Health Investigation and Innovation Institute (i3S), University of Porto, Porto, Portugal

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Corin Badiu National Institute of Endocrinology "C. Davila" University of Medicine and Pharmacy, Bucharest, Romania

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Josef Köhrle Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, and Berlin Institute of Health, Institut für Experimentelle Endokrinologie, Berlin, Germany: Co-Lead of the European Society of Endocrinology Focus Area on Environmental Endocrinology

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Leonidas Duntas Evgenideion Hospital, Unit of Endocrinology, Metabolism and Diabetes, National Kapodistrian University of Athens, Athens, Greece

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, and shellfish. The thyroid gland traps iodide (I − ), which is then oxidized and bound to thyroglobulin. This reduced anionic chemical species of the element iodine is crucial to produce thyroid hormones, which are composed of covalently bound iodine

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