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<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="other" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Head and Neck Tumors</journal-id><journal-title-group><journal-title xml:lang="en">Head and Neck Tumors</journal-title><trans-title-group xml:lang="ru"><trans-title>Опухоли головы и шеи</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2222-1468</issn><issn publication-format="electronic">2411-4634</issn><publisher><publisher-name xml:lang="en">Publishing House ABV Press</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">910</article-id><article-id pub-id-type="doi">10.17650/2222-1468-2023-13-3-10-23</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>DIAGNOSIS AND TREATMENT OF HEAD AND NECK TUMORS</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ДИАГНОСТИКА И ЛЕЧЕНИЕ ОПУХОЛЕЙ ГОЛОВЫ И ШЕИ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Problems of follicular thyroid carcinoma diagnostics</article-title><trans-title-group xml:lang="ru"><trans-title>Проблемы диагностики фолликулярного рака щитовидной железы</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9401-5737</contrib-id><name-alternatives><name xml:lang="en"><surname>Titov</surname><given-names>S. E.</given-names></name><name xml:lang="ru"><surname>Титов</surname><given-names>С. Е.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>8/2 Akademika Lavrentieva Prospekt, Novosibirsk 630090,</italic></p><p><italic>Bld. 36, Research and Production zone, Novosibirsk-117 630117 </italic></p></bio><bio xml:lang="ru"><p><italic>630090 Новосибирск, проспект Академика Лаврентьева, 8/2,</italic></p><p><italic>630117 Новосибирск-117, Научно-производственная зона, корп. 36</italic></p></bio><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5559-9872</contrib-id><name-alternatives><name xml:lang="en"><surname>Lukyanov</surname><given-names>S. A.</given-names></name><name xml:lang="ru"><surname>Лукьянов</surname><given-names>С. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><bold>Sergey A. Lukyanov</bold></p><p><italic>64 Vorovsky St., Chelyabinsk 454092</italic></p></bio><bio xml:lang="ru"><p><bold>Сергей Анатольевич Лукьянов </bold></p><p><italic>454092 Челябинск, ул. Воровского, 64</italic></p><p> </p></bio><email>111lll@mail.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6694-9030</contrib-id><name-alternatives><name xml:lang="en"><surname>Sergiyko</surname><given-names>S. V.</given-names></name><name xml:lang="ru"><surname>Сергийко</surname><given-names>С. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>64 Vorovsky St., Chelyabinsk 454092</italic></p></bio><bio xml:lang="ru"><p><italic>454092 Челябинск, ул. Воровского, 64</italic></p></bio><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3799-9407</contrib-id><name-alternatives><name xml:lang="en"><surname>Veryaskina</surname><given-names>Yu. A.</given-names></name><name xml:lang="ru"><surname>Веряскина</surname><given-names>Ю. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>8/2 Akademika Lavrentieva Prospekt, Novosibirsk 630090,</italic></p><p><italic>10 Akademika Lavrentieva Prospekt, Novosibirsk 630090</italic></p></bio><bio xml:lang="ru"><p><italic>630090 Новосибирск, проспект Академика Лаврентьева, 8/2,</italic></p><p><italic>454092 Челябинск, ул. Воровского, 64</italic></p></bio><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff4"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4186-8108</contrib-id><name-alternatives><name xml:lang="en"><surname>Ilyina</surname><given-names>T. E.</given-names></name><name xml:lang="ru"><surname>Ильина</surname><given-names>Т. Е.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>64 Vorovsky St., Chelyabinsk 454092</italic></p></bio><bio xml:lang="ru"><p><italic>454092 Челябинск, ул. Воровского, 64</italic></p></bio><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3659-7510</contrib-id><name-alternatives><name xml:lang="en"><surname>Kozorezov</surname><given-names>E. S.</given-names></name><name xml:lang="ru"><surname>Козорезова</surname><given-names>Е. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>Lit. A, Bld. 2, 8 Oleko Dundicha St., St. Petersburg 192283</italic></p></bio><bio xml:lang="ru"><p><italic>192283 Санкт-Петербург, ул. Олеко Дундича, 8, корп. 2, лит. А</italic></p></bio><xref ref-type="aff" rid="aff5"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7817-9069</contrib-id><name-alternatives><name xml:lang="en"><surname>Vorobyov</surname><given-names>S. L.</given-names></name><name xml:lang="ru"><surname>Воробьев</surname><given-names>С. Л.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>Lit. A, Bld. 2, 8 Oleko Dundicha St., St. Petersburg 192283</italic></p></bio><bio xml:lang="ru"><p><italic>192283 Санкт-Петербург, ул. Олеко Дундича, 8, корп. 2, лит. А</italic></p></bio><xref ref-type="aff" rid="aff5"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Institute of Molecular and Cellular Biology of the Siberian Branch of the Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">ФГБУ «Институт молекулярной и клеточной биологии Сибирского отделения Российской академии наук»</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Vector-Best</institution></aff><aff><institution xml:lang="ru">АО «Вектор-Бест»</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">South Ural State Medical University, Ministry of Health of Russia</institution></aff><aff><institution xml:lang="ru">ФГБОУ ВО «Южно-Уральский государственный медицинский университет» Минздрава России</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">Federal Research Center Institute of Cytology and Genetics of the Siberian branch of the Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">ФГБУ «Федеральный исследовательский центр “Институт цитологии и генетики Сибирского отделения Российской академии наук”»</institution></aff></aff-alternatives><aff-alternatives id="aff5"><aff><institution xml:lang="en">National Center for Clinical Morphological Diagnostics</institution></aff><aff><institution xml:lang="ru">ООО «Национальный центр клинической морфологической диагностики»</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2023-12-12" publication-format="electronic"><day>12</day><month>12</month><year>2023</year></pub-date><volume>13</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>10</fpage><lpage>23</lpage><history><date date-type="received" iso-8601-date="2023-12-11"><day>11</day><month>12</month><year>2023</year></date><date date-type="accepted" iso-8601-date="2023-12-11"><day>11</day><month>12</month><year>2023</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2023, Titov S.E., Lukyanov S.A., Sergiyko S.V., Veryaskina Y.A., Ilyina T.E., Kozorezov E.S., Vorobyov S.L.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2023, Титов С.Е., Лукьянов С.А., Сергийко С.В., Веряскина Ю.А., Ильина Т.Е., Козорезова Е.С., Воробьев С.Л.</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="en">Titov S.E., Lukyanov S.A., Sergiyko S.V., Veryaskina Y.A., Ilyina T.E., Kozorezov E.S., Vorobyov S.L.</copyright-holder><copyright-holder xml:lang="ru">Титов С.Е., Лукьянов С.А., Сергийко С.В., Веряскина Ю.А., Ильина Т.Е., Козорезова Е.С., Воробьев С.Л.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://ogsh.abvpress.ru/jour/article/view/910">https://ogsh.abvpress.ru/jour/article/view/910</self-uri><abstract xml:lang="en"><p><bold>Introduction. </bold>Follicular thyroid cancer is much less common than papillary cancer. Nevertheless, the main difficulties in preoperative diagnosis are associated with this morphological type. A fine needle aspiration biopsy is not able to distinguish a benign follicular adenoma from a follicular carcinoma, which forces surgeons to perform diagnostic resection of the thyroid gland in all patients with a cytological conclusion «follicular tumor».</p><p><bold>Aim. </bold>To search for microRNAs specific to follicular cancer by sequencing a new generation.</p><p><bold>Materials and</bold><bold> </bold><bold>methods.</bold><bold> </bold>The data of patients with a preoperative cytological conclusion «follicular tumor» operated at the Chelyabinsk Center for Endocrine Surgery from 2021 to 2022 were analyzed. Histological preparations were reviewed twice by pathologists. Genome sequencing was performed in 8 histological samples of follicular cancer and 8 samples of follicular adenoma. The expression levels of the selected microRNAs were compared with 198 archived cytological samples of various types of thyroid tumors.</p><p><bold>Results. </bold>The risk of malignancy at the cytological conclusion «follicular tumor» was 25.4 % (error 74.6 %). Follicular cancer was first detected in 36 patients, the incidence was 0.68 new cases per 100 thousand population per year. The diagnosis of «follicular cancer» was confirmed by 3 morphologists in 8 (36.4 %) cases. Sequencing revealed the 5 most distinct microRNAs between follicular cancer and follicular adenoma: miR-625, miR-323a, let-7a, let-7c and miR-574. The level of errors in the differentiation of follicular adenoma and follicular cancer using the microRNAs we selected was 21 % (35 % with cross-validation).</p><p><bold>Conclusion.</bold><bold> </bold>Molecular genetic research at the preoperative stage, aimed at differentiating follicular cancer and follicular adenoma, in comparison with cytological research has a greater, but insufficient accuracy for making a final clinical decision.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Введение. </bold>фолликулярный рак щитовидной железы встречается значительно реже папиллярного. тем не менее основные трудности в дооперационной диагностике связаны именно с этим морфологическим типом. тонкоигольная аспирационная биопсия неспособна отличить доброкачественную фолликулярную аденому от фолликулярной карциномы, что вынуждает хирургов выполнять диагностическую резекцию щитовидной железы у всех пациентов с цитологическим заключением «фолликулярная опухоль».</p><p><bold>Цель исследования</bold><bold> </bold>– поиск специфических для фолликулярного рака микроРНК с помощью секвенирования нового поколения.</p><p><bold>Материалы и методы. </bold>проанализированы данные пациентов с дооперационным цитологическим заключением</p><p>«фолликулярная опухоль», прооперированных в челябинском центре эндокринной хирургии с 2021 по 2022 г. гистологические препараты дважды пересматривались экспертами-патологами. секвенирование генома выполнено в 8 гистологических образцах фолликулярного рака и 8 образцах фолликулярной аденомы. уровни экспрессии отобранных микроРНК сравнивали со 198 архивными цитологическими образцами различных типов опухолей щитовидной железы.</p><p><bold>Результаты. </bold>Риск злокачественности при цитологическом заключении «фолликулярная опухоль» составил 25,4 % (ошибка 74,6 %). фолликулярный рак был впервые установлен у 36 пациентов, заболеваемость составила 0,68 случая на 100 тыс. населения в год. Диагноз «фолликулярный рак» подтвержден 3 морфологами в 8 (36,4 %) случаях. секвенирование позволило выявить 5 наиболее различающихся между фолликулярным раком и фолликулярной аденомой микроРНК: miR-625, miR-323a, let-7a, let-7c и miR-574. уровень ошибок при дифференцировке фолликулярной аденомы и фолликулярного рака с помощью выбранных нами микроРНК составил 21 % (при кросс-валидации 35 %).</p><p><bold>Заключение. </bold>молекулярно-генетическое исследование на дооперационном этапе, направленное на дифференцировку фолликулярного рака и фолликулярной аденомы, по сравнению с цитологическим исследованием имеет большую, но недостаточную для принятия окончательного клинического решения точность.</p></trans-abstract><kwd-group xml:lang="en"><kwd>follicular thyroid cancer</kwd><kwd>follicular thyroid adenoma</kwd><kwd>microRNA</kwd><kwd>molecular diagnostics</kwd><kwd>mass parallel sequencing</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>фолликулярный рак щитовидной железы</kwd><kwd>фолликулярная аденома щитовидной железы, микроРНК, молекулярная диагностика, массовое параллельное секвенирование</kwd></kwd-group><funding-group><funding-statement xml:lang="en">The research was carried out within the framework of the state task (Unified State information system for accounting of research, development and technological works for civil purposes, No. 121040100268-9) and at the expense of a grant from the Russian Science Foundation (grant No. 20-14-00074-P).</funding-statement><funding-statement xml:lang="ru">Исследование выполнено в рамках государственного задания (Единая государственная информационная система учета научно-исследовательских, опытно-конструкторских и технологических работ гражданского назначения, № 121040100268-9) и за счет гранта Российского научного фонда (грант № 20-14-00074-П)</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Bongiovanni M., Spitale A., Faquin W.C. et al. 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