<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE article PUBLIC "-//NLM//DTD JATS (Z39.96) Journal Publishing DTD v1.3 20210610//EN" "JATS-journalpublishing1-3.dtd">
<article article-type="research-article" dtd-version="1.3" 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" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">urmj</journal-id><journal-title-group><journal-title xml:lang="ru">Уральский медицинский журнал</journal-title><trans-title-group xml:lang="en"><trans-title>Ural Medical Journal</trans-title></trans-title-group></journal-title-group><issn pub-type="epub">2949-4389</issn><publisher><publisher-name>Ural State Medical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.52420/umj.24.2.71</article-id><article-id custom-type="edn" pub-id-type="custom">JDGSPP</article-id><article-id custom-type="elpub" pub-id-type="custom">urmj-1778</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>Оригинальные статьи | Original articles</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Original articles</subject></subj-group></article-categories><title-group><article-title>Изменение ядрышковой активности в условиях микросателлитной нестабильности в слизистой оболочке матки при предраке и раке эндометрия</article-title><trans-title-group xml:lang="en"><trans-title>Changes in Nucleolar Activity Under Conditions of Microsatellite Instability in the Uterine Mucosa in Precancer and Endometrial Cancer</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9245-3749</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Затворницкая</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Zatvornickaya</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Александра Вадимовна Затворницкая — кандидат медицинских наук, ассистент кафедры патологической анатомии и судебной медицины имени профессора В. Л. Коваленко.</p><p>Челябинск</p></bio><bio xml:lang="en"><p>Alexandra V. Zatvornickaya — Candidate of Sciences (Medicine), Assistant of the Department of Pathological Anatomy and Forensic Medicine named after professor V. L. Kovalenko.</p><p>Chelyabinsk</p></bio><email xlink:type="simple">monostyle@list.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2008-7671</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Казачков</surname><given-names>Е. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Kazachkov</surname><given-names>E. L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Евгений Леонидович Казачков — доктор медицинских наук, профессор, заведующий кафедрой патологической анатомии и судебной медицины имени профессора В. Л. Коваленко.</p><p>Челябинск</p></bio><bio xml:lang="en"><p>Evgeniy L. Kazachkov — Doctor of Sciences (Medicine), Professor, Head of the Department of Pathological Anatomy and Forensic Medicine named after professor V.L. Kovalenko.</p><p>Chelyabinsk</p></bio><email xlink:type="simple">doctorkel@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1175-4479</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Казачкова</surname><given-names>Э. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kazachkova</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Элла Алексеевна Казачкова — доктор медицинских наук, профессор, профессор кафедры акушерства и гинекологии.</p><p>Челябинск</p></bio><bio xml:lang="en"><p>Ella A. Kazachkova — Doctor of Sciences (Medicine), Professor, Professor of the Department of Obstetrics and Gynecology.</p><p>Chelyabinsk</p></bio><email xlink:type="simple">kazachkovaea@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Южно‑Уральский государственный медицинский университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>South Ural State Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>05</day><month>05</month><year>2025</year></pub-date><volume>24</volume><issue>2</issue><elocation-id>71–83</elocation-id><permissions><copyright-statement>Copyright &amp;#x00A9; Затворницкая А.В., Казачков Е.Л., Казачкова Э.А., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Затворницкая А.В., Казачков Е.Л., Казачкова Э.А.</copyright-holder><copyright-holder xml:lang="en">Zatvornickaya A.V., Kazachkov E.L., Kazachkova E.A.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.umjusmu.ru/jour/article/view/1778">https://www.umjusmu.ru/jour/article/view/1778</self-uri><abstract><sec><title>Актуальность</title><p>Актуальность. Анализ гистохимических характеристик пролиферативной активности эндометрия в случае микросателлитной нестабильности в образцах эндометрия у женщин с предраковыми изменениями является важным для клинической практики. Это исследование может помочь в более точной оценке риска малигнизации и выборе оптимальной стратегии наблюдения и лечения для пациенток с такой патологией.</p><p>Цель исследования — анализ состояния ядрышковых организаторов при наличии микросателлитной нестабильности в эндометриальной ткани у женщин, страдающих от предрака и рака тела матки, с сопоставлением данных.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. В рамках работы проведено ретроспективное нерандомизированное исследование, осуществленное в один этап, с использованием гистологических, иммуногистохимических методов, а также статистического анализа.</p></sec><sec><title>Результаты</title><p>Результаты. Установлено, что активность ядрышковых организаторов усиливается при микросателлитной нестабильности, что указывает на активизацию внутриклеточного белкового синтеза. Вышеуказанное содействует увеличению пролиферативного потенциала эпителиоцитов железистого и стромального компонентов эндометрия в условиях гиперплазии и карциномы.</p></sec><sec><title>Заключение</title><p>Заключение. Представленные результаты могут служить в качестве дополнительного критерия при выборе тактики лечения пациенток с предраковыми изменениями и раком эндометрия.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. The study of histochemical features of the proliferative activity of the endometrium in conditions of microsatellite instability in the endometrium in women with precancerous damage to the mucous membrane is of clinical interest for determining the prognosis of malignancy and tactics of managing patients with this pathology.</p><p>The aim of the study was to analyze the state of the nucleolar organizer system in conditions of microsatellite instability in the uterine mucosa in patients with precancer and endometrial cancer in a comparative aspect.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. A one-stage non-randomized retrospective study was performed using histological, immunohistochemical and statistical methods.</p></sec><sec><title>Results</title><p>Results. An increase in the activity of nucleolar organizers was established in microsatellite instability, indicating an increase in protein-synthetic activity in cells and, as a consequence, the proliferative potential of glandular epithelial cells and endometrial stromal cells in its hyperplasia and carcinoma.</p></sec><sec><title>Conclusion</title><p>Conclusion. The obtained results can be used as an additional factor in determining the tactics of managing patients with precancer and endometrial cancer.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>гиперплазия эндометрия</kwd><kwd>эндометриоидная аденокарцинома</kwd><kwd>ядрышковые организаторы</kwd><kwd>микросателлитная нестабильность</kwd><kwd>канцеропревенция</kwd></kwd-group><kwd-group xml:lang="en"><kwd>endometrial hyperplasia</kwd><kwd>endometrioid adenocarcinoma</kwd><kwd>nucleolar organizers</kwd><kwd>microsatellite instability</kwd><kwd>cancer prevention</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Aganezova NV, Aganezov SS, Gogichashvili KE. Characteristics of endometrial receptivity in women with different endometrial thickness. Obstetrics, Gynecology and Reproduction. 2022;16(2):108–121. (In Russ.). DOI: https://doi.org/10.17749/2313-7347/ob.gyn.rep.2022.303.</mixed-citation><mixed-citation xml:lang="en">Aganezova NV, Aganezov SS, Gogichashvili KE. Characteristics of endometrial receptivity in women with different endometrial thickness. Obstetrics, Gynecology and Reproduction. 2022;16(2):108–121. (In Russ.). DOI: https://doi.org/10.17749/2313-7347/ob.gyn.rep.2022.303.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Radzinskiy VE Orazov MR, Mikhaleva LM Khamoshina MB, Mullina IA, Artemenko YuS. Hysteroscopic picture of recurrent endometrial hyperplasia without atypia in women of reproductive age. Obstetrics and Gynecology: News, Opinions, Training. 2024;12(Suppl.):55–58. (In Russ.). DOI: https://doi.org/10.33029/23039698-2024-12-suppl-55-58.</mixed-citation><mixed-citation xml:lang="en">Radzinskiy VE Orazov MR, Mikhaleva LM Khamoshina MB, Mullina IA, Artemenko YuS. Hysteroscopic picture of recurrent endometrial hyperplasia without atypia in women of reproductive age. Obstetrics and Gynecology: News, Opinions, Training. 2024;12(Suppl.):55–58. (In Russ.). DOI: https://doi.org/10.33029/23039698-2024-12-suppl-55-58.</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Sabantsev MA, Shramko SV, Levchenko VG, Volkov OA, Tretiakova TV. Endometrial hyperplasia: Without atypia and with atypia. Gynecology. 2021;23(1):18–24. (In Russ.). DOI: https://doi.org/10.26442/20795696.2021.1.200666.</mixed-citation><mixed-citation xml:lang="en">Sabantsev MA, Shramko SV, Levchenko VG, Volkov OA, Tretiakova TV. Endometrial hyperplasia: Without atypia and with atypia. Gynecology. 2021;23(1):18–24. (In Russ.). DOI: https://doi.org/10.26442/20795696.2021.1.200666.</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">MacLean JA II, Hayashi K. Progesterone actions and resistance in gynecological disorders. Cells. 2022; 11(4):647. DOI: https://doi.org/10.3390/cells11040647.</mixed-citation><mixed-citation xml:lang="en">MacLean JA II, Hayashi K. Progesterone actions and resistance in gynecological disorders. Cells. 2022; 11(4):647. DOI: https://doi.org/10.3390/cells11040647.</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Sobivchak MS, Protasova AE, Raskin GA, Mukhina MS, Kaurtseva AS. Malignant transformation of endometrial hyperplastic processes: Immunohistochemical features. Tumors of Female Reproductive System. 2022;18(3):89–99. (In Russ.). DOI: https://doi.org/10.17650/1994-4098-2022-18-3-89-99.</mixed-citation><mixed-citation xml:lang="en">Sobivchak MS, Protasova AE, Raskin GA, Mukhina MS, Kaurtseva AS. Malignant transformation of endometrial hyperplastic processes: Immunohistochemical features. Tumors of Female Reproductive System. 2022;18(3):89–99. (In Russ.). DOI: https://doi.org/10.17650/1994-4098-2022-18-3-89-99.</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Cozzolino M, Alsbjerg B, Pellicer A, Garcia-Velasco JA, Humaidan P. The adenomyosis/endometriosis IVF patient — call for clinical focus. Reproductive BioMedicine Online. 2024;48(4):103737. DOI: https://doi.org/10.1016/j.rbmo.2023.103737.</mixed-citation><mixed-citation xml:lang="en">Cozzolino M, Alsbjerg B, Pellicer A, Garcia-Velasco JA, Humaidan P. The adenomyosis/endometriosis IVF patient — call for clinical focus. Reproductive BioMedicine Online. 2024;48(4):103737. DOI: https://doi.org/10.1016/j.rbmo.2023.103737.</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Bykov AT, Shaposhnikov AV, Malyarenko TN, Malyarenko YuE. The efficacy of non-medicamental methods in cancer prevention, treatment, and rehabilitation of oncologic patients. Medical Herald of the South of Russia. 2014;(1):5–14. (In Russ.). EDN: https://www.elibrary.ru/SUEBXN.</mixed-citation><mixed-citation xml:lang="en">Bykov AT, Shaposhnikov AV, Malyarenko TN, Malyarenko YuE. The efficacy of non-medicamental methods in cancer prevention, treatment, and rehabilitation of oncologic patients. Medical Herald of the South of Russia. 2014;(1):5–14. (In Russ.). EDN: https://www.elibrary.ru/SUEBXN.</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Iolchiev BS, Klenovitsky PM, Novgorodtsev IP, Prytkov YA, Khusnetdinova NF. Assessment of nucleolar activity based on morphometric and photometric parameters using computer technology. Topical Biotechnology. 2021;(1):243–245. (In Russ.). EDN: https://www.elibrary.ru/FZKUIT.</mixed-citation><mixed-citation xml:lang="en">Iolchiev BS, Klenovitsky PM, Novgorodtsev IP, Prytkov YA, Khusnetdinova NF. Assessment of nucleolar activity based on morphometric and photometric parameters using computer technology. Topical Biotechnology. 2021;(1):243–245. (In Russ.). EDN: https://www.elibrary.ru/FZKUIT.</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Chuchkova NN, Pazinenko KA, Smetanina MV, Kormilina NV. Nuclear-nucleolar relationships and nucleolar stress in hepatocytes with hyperhomocysteinemia. Genes and Cells. 2021;16(1):37–42. (In Russ.). DOI: https://doi.org/10.23868/202104005.</mixed-citation><mixed-citation xml:lang="en">Chuchkova NN, Pazinenko KA, Smetanina MV, Kormilina NV. Nuclear-nucleolar relationships and nucleolar stress in hepatocytes with hyperhomocysteinemia. Genes and Cells. 2021;16(1):37–42. (In Russ.). DOI: https://doi.org/10.23868/202104005.</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Il’ina TE, Kazachkov EL, Sergijko SV. Predictive assessment of micro RNA expression level and number of nucleolar organizer regions with follicular thyroid tumor of undetermined malignant potential. Ural Medical Journal. 2023;22(2):74–83. (In Russ.). DOI: https://doi.org/10.52420/2071-5943-2023-22-2-74-83.</mixed-citation><mixed-citation xml:lang="en">Il’ina TE, Kazachkov EL, Sergijko SV. Predictive assessment of micro RNA expression level and number of nucleolar organizer regions with follicular thyroid tumor of undetermined malignant potential. Ural Medical Journal. 2023;22(2):74–83. (In Russ.). DOI: https://doi.org/10.52420/2071-5943-2023-22-2-74-83.</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Kazachkov EL, Sergiyko SV, Ilyina TE, Safronova IV, Lukyanov SA, Titov SE. Thyroid gland follicular tumor of undetermined malignant potential: Justification of surgical tactics. Journal of New Medical Technologies. 2024;31(3):107–111. (In Russ.). DOI: https://doi.org/10.24412/1609-2163-2024-3-107-111.</mixed-citation><mixed-citation xml:lang="en">Kazachkov EL, Sergiyko SV, Ilyina TE, Safronova IV, Lukyanov SA, Titov SE. Thyroid gland follicular tumor of undetermined malignant potential: Justification of surgical tactics. Journal of New Medical Technologies. 2024;31(3):107–111. (In Russ.). DOI: https://doi.org/10.24412/1609-2163-2024-3-107-111.</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Gordeev VV, Antonov AG, Evseev AN, Kurunova II, Kryzhanovskaya SY, Marshev SV. The role of computer morphometry of nucleolar ribosome organizer zones in the algorithm of management of patients with prostatic intra-epithelial neoplasia. Pacific Medical Journal. 2011;(1):23–25. (In Russ.). EDN: https://elibrary.ru/TBGJSB.</mixed-citation><mixed-citation xml:lang="en">Gordeev VV, Antonov AG, Evseev AN, Kurunova II, Kryzhanovskaya SY, Marshev SV. The role of computer morphometry of nucleolar ribosome organizer zones in the algorithm of management of patients with prostatic intra-epithelial neoplasia. Pacific Medical Journal. 2011;(1):23–25. (In Russ.). EDN: https://elibrary.ru/TBGJSB.</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Kobyakov DS, Klimachev VV, Avdalyan AM, Bobrov IP, Bychkova EY, Lazarev AF, et al. Relationship between the argyrophilic proteins of the nucleolar organizer region and stage of squamous-cell carcinoma of the lung. Bulletin of Experimental Biology and Medicine. 2013;156(1):81–85. DOI: https://doi.org/10.1007/s10517013-2283-1.</mixed-citation><mixed-citation xml:lang="en">Kobyakov DS, Klimachev VV, Avdalyan AM, Bobrov IP, Bychkova EY, Lazarev AF, et al. Relationship between the argyrophilic proteins of the nucleolar organizer region and stage of squamous-cell carcinoma of the lung. Bulletin of Experimental Biology and Medicine. 2013;156(1):81–85. DOI: https://doi.org/10.1007/s10517013-2283-1.</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Akhavan A, Keith JD, Bastacky SI, Cai C, Wang Y, Nelson JB. The proportion of cores with high-grade prostatic intraepithelial neoplasia on extended-pattern needle biopsy is significantly associated with prostate cancer on site-directed repeat biopsy. BJU International. 2007;99(4):765–769. DOI: https://doi.org/10.1111/j.1464-410X.2006.06681.x.</mixed-citation><mixed-citation xml:lang="en">Akhavan A, Keith JD, Bastacky SI, Cai C, Wang Y, Nelson JB. The proportion of cores with high-grade prostatic intraepithelial neoplasia on extended-pattern needle biopsy is significantly associated with prostate cancer on site-directed repeat biopsy. BJU International. 2007;99(4):765–769. DOI: https://doi.org/10.1111/j.1464-410X.2006.06681.x.</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Tosoian JJ, Alam R, Ball MW, Carter HB, Epstein JI. Managing high-grade prostatic intraepithelial neoplasia (HGPIN) and atypical glands on prostate biopsy. Nature Reviews Urology. 2018;15(1):55–66. DOI: https://doi.org/10.1038/nrurol.2017.134.</mixed-citation><mixed-citation xml:lang="en">Tosoian JJ, Alam R, Ball MW, Carter HB, Epstein JI. Managing high-grade prostatic intraepithelial neoplasia (HGPIN) and atypical glands on prostate biopsy. Nature Reviews Urology. 2018;15(1):55–66. DOI: https://doi.org/10.1038/nrurol.2017.134.</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Tryakin AA, Fedyanin MYu, Tsukanov AS, Shelygin YuA, Pokatayev IA, Ignatova EO, et al. Microsatellite instability as a unique characteristic of tumors and a predictor of response to immune therapy. Malignant Tumours. 2019;9(4):59–69. (In Russ.). DOI: https://doi.org/10.18027/2224-5057-2019-9-4-59-69.</mixed-citation><mixed-citation xml:lang="en">Tryakin AA, Fedyanin MYu, Tsukanov AS, Shelygin YuA, Pokatayev IA, Ignatova EO, et al. Microsatellite instability as a unique characteristic of tumors and a predictor of response to immune therapy. Malignant Tumours. 2019;9(4):59–69. (In Russ.). DOI: https://doi.org/10.18027/2224-5057-2019-9-4-59-69.</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Nemtsova MV, Molchanov AD, Kuznetsova EB, Bure IV. Molecular classifications of gastric cancer and their clinical potential. Advances in Molecular Oncology. 2024;11(2):40–49. (In Russ.). DOI: https://doi.org/10.17650/2313-805X-2024-11-2-40-49.</mixed-citation><mixed-citation xml:lang="en">Nemtsova MV, Molchanov AD, Kuznetsova EB, Bure IV. Molecular classifications of gastric cancer and their clinical potential. Advances in Molecular Oncology. 2024;11(2):40–49. (In Russ.). DOI: https://doi.org/10.17650/2313-805X-2024-11-2-40-49.</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Rumyantsev AA. Efficient sequence of therapy for advanced and metastatic endometrial cancer. Tumors of Female Reproductive System. 2022;18(2):119–126. (In Russ.). DOI: https://doi.org/10.17650/1994-40982022-18-2-119-126.</mixed-citation><mixed-citation xml:lang="en">Rumyantsev AA. Efficient sequence of therapy for advanced and metastatic endometrial cancer. Tumors of Female Reproductive System. 2022;18(2):119–126. (In Russ.). DOI: https://doi.org/10.17650/1994-40982022-18-2-119-126.</mixed-citation></citation-alternatives></ref><ref id="cit19"><label>19</label><citation-alternatives><mixed-citation xml:lang="ru">Lorenzi M, Amonkar M, Zhang J, Mehta S, Liawet KL. Epidemiology of microsatellite instability high (MSI-H) and deficient mismatch repair (dMMR) in solid tumors: A structured literature review. Journal of Clinical Oncology. 2020;2020:1807929. DOI: https://doi.org/10.1155/2020/1807929.</mixed-citation><mixed-citation xml:lang="en">Lorenzi M, Amonkar M, Zhang J, Mehta S, Liawet KL. Epidemiology of microsatellite instability high (MSI-H) and deficient mismatch repair (dMMR) in solid tumors: A structured literature review. Journal of Clinical Oncology. 2020;2020:1807929. DOI: https://doi.org/10.1155/2020/1807929.</mixed-citation></citation-alternatives></ref><ref id="cit20"><label>20</label><citation-alternatives><mixed-citation xml:lang="ru">Yamamoto H, Watanabe Y, Arai H, Umemoto K, Tateishi K, Sunakawa Y. Microsatellite instability: A 2024 update. Cancer Science. 2024;115(6):1738–1748. DOI: http://doi.org/10.1111/cas.16160.</mixed-citation><mixed-citation xml:lang="en">Yamamoto H, Watanabe Y, Arai H, Umemoto K, Tateishi K, Sunakawa Y. Microsatellite instability: A 2024 update. Cancer Science. 2024;115(6):1738–1748. DOI: http://doi.org/10.1111/cas.16160.</mixed-citation></citation-alternatives></ref><ref id="cit21"><label>21</label><citation-alternatives><mixed-citation xml:lang="ru">Kazachkov EL, Kazachkova EA, Voropaeva EE, Zatvornitskaya AV. Endometrial hyperplasia and microsatellite instability: Possibilities for predicting tumor transformation of the endometrium. Clinical and Experimental Morphology. 2023;12(4):14–22 (In Russ.). DOI: http://doi.org/10.31088/CEM2023.12.4.14-22.</mixed-citation><mixed-citation xml:lang="en">Kazachkov EL, Kazachkova EA, Voropaeva EE, Zatvornitskaya AV. Endometrial hyperplasia and microsatellite instability: Possibilities for predicting tumor transformation of the endometrium. Clinical and Experimental Morphology. 2023;12(4):14–22 (In Russ.). DOI: http://doi.org/10.31088/CEM2023.12.4.14-22.</mixed-citation></citation-alternatives></ref><ref id="cit22"><label>22</label><citation-alternatives><mixed-citation xml:lang="ru">Bogdanov LA, Kutikhin AG. Optimization of hematoxylin and eosin staining of heart, blood vessels, liver, and spleen. Fundamental and Clinical Medicine. 2019;4(4):70–77. (In Russ.). DOI: https://doi.org/10.23946/25000764-2019-4-4-70-77.</mixed-citation><mixed-citation xml:lang="en">Bogdanov LA, Kutikhin AG. Optimization of hematoxylin and eosin staining of heart, blood vessels, liver, and spleen. Fundamental and Clinical Medicine. 2019;4(4):70–77. (In Russ.). DOI: https://doi.org/10.23946/25000764-2019-4-4-70-77.</mixed-citation></citation-alternatives></ref><ref id="cit23"><label>23</label><citation-alternatives><mixed-citation xml:lang="ru">Bankhead P, Loughrey MB, Fernández JA, Dombrowski Y, McArt DG, Dunne PD, et al. QuPath: Open source software for digital pathology image analysis. Scientific Reports. 2017;7(1):16878. DOI: https://doi.org/10.1038/s41598-017-17204-5.</mixed-citation><mixed-citation xml:lang="en">Bankhead P, Loughrey MB, Fernández JA, Dombrowski Y, McArt DG, Dunne PD, et al. QuPath: Open source software for digital pathology image analysis. Scientific Reports. 2017;7(1):16878. DOI: https://doi.org/10.1038/s41598-017-17204-5.</mixed-citation></citation-alternatives></ref><ref id="cit24"><label>24</label><citation-alternatives><mixed-citation xml:lang="ru">Humphries MP, Maxwell P, Salto-Tellez M. QuPath: The global impact of an open source digital pathology system. Computational and Structural Biotechnology Journal. 2021;19:852–859. DOI: https://doi.org/10.1016/j.csbj.2021.01.022.</mixed-citation><mixed-citation xml:lang="en">Humphries MP, Maxwell P, Salto-Tellez M. QuPath: The global impact of an open source digital pathology system. Computational and Structural Biotechnology Journal. 2021;19:852–859. DOI: https://doi.org/10.1016/j.csbj.2021.01.022.</mixed-citation></citation-alternatives></ref><ref id="cit25"><label>25</label><citation-alternatives><mixed-citation xml:lang="ru">Luchini C, Bibeau F, Ligtenberg MJL, Singh N, Nottegar A, Bosse T, et al. ESMO recommendations on microsatellite instability testing for immunotherapy in cancer, and its relationship with PD-1/PD-L1 expression and tumour mutational burden: A systematic review-based approach. Annals of Oncology. 2019; 30(8):1232–1243. DOI: https://doi.org/10.1093/annonc/mdz116.</mixed-citation><mixed-citation xml:lang="en">Luchini C, Bibeau F, Ligtenberg MJL, Singh N, Nottegar A, Bosse T, et al. ESMO recommendations on microsatellite instability testing for immunotherapy in cancer, and its relationship with PD-1/PD-L1 expression and tumour mutational burden: A systematic review-based approach. Annals of Oncology. 2019; 30(8):1232–1243. DOI: https://doi.org/10.1093/annonc/mdz116.</mixed-citation></citation-alternatives></ref><ref id="cit26"><label>26</label><citation-alternatives><mixed-citation xml:lang="ru">Nikanjam M, Arguello D, Gatalica Z, Swensen J, Barkauskas DA, Kurzrock R. Relationship between protein biomarkers of chemotherapy response and microsatellite status, tumor mutational burden and PDL1 expression in cancer patients. International Journal of Cancer. 2020;146(11):3087–3097. DOI: https://doi.org/10.1002/ijc.32661.</mixed-citation><mixed-citation xml:lang="en">Nikanjam M, Arguello D, Gatalica Z, Swensen J, Barkauskas DA, Kurzrock R. Relationship between protein biomarkers of chemotherapy response and microsatellite status, tumor mutational burden and PDL1 expression in cancer patients. International Journal of Cancer. 2020;146(11):3087–3097. DOI: https://doi.org/10.1002/ijc.32661.</mixed-citation></citation-alternatives></ref><ref id="cit27"><label>27</label><citation-alternatives><mixed-citation xml:lang="ru">Li K, Luo H, Huang L, Luo H, Xiao Z. Microsatellite instability: A review of what the oncologist should know. Cancer Cell International. 2020;20(1):16. DOI: https://doi.org/10.1186/s12935-019-1091-8.</mixed-citation><mixed-citation xml:lang="en">Li K, Luo H, Huang L, Luo H, Xiao Z. Microsatellite instability: A review of what the oncologist should know. Cancer Cell International. 2020;20(1):16. DOI: https://doi.org/10.1186/s12935-019-1091-8.</mixed-citation></citation-alternatives></ref><ref id="cit28"><label>28</label><citation-alternatives><mixed-citation xml:lang="ru">Crocker J, Nar P. Nucleolar organizer regions in lymphomas. The Journal of Pathology. 1987;151(2):111–118. DOI: https://doi.org/10.1002/path.1711510203.</mixed-citation><mixed-citation xml:lang="en">Crocker J, Nar P. Nucleolar organizer regions in lymphomas. The Journal of Pathology. 1987;151(2):111–118. DOI: https://doi.org/10.1002/path.1711510203.</mixed-citation></citation-alternatives></ref><ref id="cit29"><label>29</label><citation-alternatives><mixed-citation xml:lang="ru">Rüschoff J, Prasser C, Cortez T, Höhne HM, Hohenberger W, Hofstädter F. Diagnostic value of AgNOR staining in follicular cell neoplasms of the thyroid: Comparison of evaluation methods and nucleolar features. The American Journal of Surgical Pathology. 1993;17(12):1281–1288. DOI: https://doi.org/10.1097/00000478199312000-00010.</mixed-citation><mixed-citation xml:lang="en">Rüschoff J, Prasser C, Cortez T, Höhne HM, Hohenberger W, Hofstädter F. Diagnostic value of AgNOR staining in follicular cell neoplasms of the thyroid: Comparison of evaluation methods and nucleolar features. The American Journal of Surgical Pathology. 1993;17(12):1281–1288. DOI: https://doi.org/10.1097/00000478199312000-00010.</mixed-citation></citation-alternatives></ref><ref id="cit30"><label>30</label><citation-alternatives><mixed-citation xml:lang="ru">Crocker J, Boldy DAR, Egan MJ. How should we count Ag ORs? Proposals for standardized approach. Journal of Pathology. 1989;158(3):185–188. DOI: https://doi.org/10.1002/path.1711580303.</mixed-citation><mixed-citation xml:lang="en">Crocker J, Boldy DAR, Egan MJ. How should we count Ag ORs? Proposals for standardized approach. Journal of Pathology. 1989;158(3):185–188. DOI: https://doi.org/10.1002/path.1711580303.</mixed-citation></citation-alternatives></ref><ref id="cit31"><label>31</label><citation-alternatives><mixed-citation xml:lang="ru">Gerasimov AN, Morozova NI. Parametric and nonparametric methods in medical statistics. Epidemiology and Vaccine Prevention. 2015;14 (5):6–12. (In Russ.). DOI: https://doi.org/10.31631/2073-3046-2015-14-56-12.</mixed-citation><mixed-citation xml:lang="en">Gerasimov AN, Morozova NI. Parametric and nonparametric methods in medical statistics. Epidemiology and Vaccine Prevention. 2015;14 (5):6–12. (In Russ.). DOI: https://doi.org/10.31631/2073-3046-2015-14-56-12.</mixed-citation></citation-alternatives></ref><ref id="cit32"><label>32</label><citation-alternatives><mixed-citation xml:lang="ru">Genutis LК, Tomsic J, Bundschuh RA, Brock PL, Williams MD, Roychowdhury S, et al. Microsatellite instability occurs in a subset of follicular thyroid cancers. Thyroid. 2019;29(4):523–529. DOI: https://doi.org/10.1089/thy.2018.0655.</mixed-citation><mixed-citation xml:lang="en">Genutis LК, Tomsic J, Bundschuh RA, Brock PL, Williams MD, Roychowdhury S, et al. Microsatellite instability occurs in a subset of follicular thyroid cancers. Thyroid. 2019;29(4):523–529. DOI: https://doi.org/10.1089/thy.2018.0655.</mixed-citation></citation-alternatives></ref><ref id="cit33"><label>33</label><citation-alternatives><mixed-citation xml:lang="ru">Demidova IA, Filipenko ML, Tsukanov AS, Imyanitov EN. Microsatellite instability: Nuances of laboratory diagnostics (position of the Interregional Organization of Molecular Geneticists in Oncology and Oncohematology). Voprosy Onkologii. 2023;69(2):174–179. (In Russ.). DOI: https://doi.org/10.37469/0507-37582023-69-2-174-179.</mixed-citation><mixed-citation xml:lang="en">Demidova IA, Filipenko ML, Tsukanov AS, Imyanitov EN. Microsatellite instability: Nuances of laboratory diagnostics (position of the Interregional Organization of Molecular Geneticists in Oncology and Oncohematology). Voprosy Onkologii. 2023;69(2):174–179. (In Russ.). DOI: https://doi.org/10.37469/0507-37582023-69-2-174-179.</mixed-citation></citation-alternatives></ref><ref id="cit34"><label>34</label><citation-alternatives><mixed-citation xml:lang="ru">Jumaah AS, Al-Haddad HS, Salem MM, McAllister KA, Yasseen AA. Mismatch repair deficiency and clinicopathological characteristics in endometrial carcinoma: A systematic review and meta-analysis. Journal of Pathology and Translational Medicine. 2021;55(3):202–211. DOI: https://doi.org/10.4132/jptm.2021.02.19.</mixed-citation><mixed-citation xml:lang="en">Jumaah AS, Al-Haddad HS, Salem MM, McAllister KA, Yasseen AA. Mismatch repair deficiency and clinicopathological characteristics in endometrial carcinoma: A systematic review and meta-analysis. Journal of Pathology and Translational Medicine. 2021;55(3):202–211. DOI: https://doi.org/10.4132/jptm.2021.02.19.</mixed-citation></citation-alternatives></ref><ref id="cit35"><label>35</label><citation-alternatives><mixed-citation xml:lang="ru">Niu S, Molberg K, Castrillon DH, Lucas E, Chen H. Biomarkers in the diagnosis of endometrial precancers. molecular characteristics, candidate immunohistochemical markers, and promising results of three-marker panel: Current status and future directions. Cancers. 2024;16(6):1159. DOI: https://doi.org/10.3390/cancers16061159.</mixed-citation><mixed-citation xml:lang="en">Niu S, Molberg K, Castrillon DH, Lucas E, Chen H. Biomarkers in the diagnosis of endometrial precancers. molecular characteristics, candidate immunohistochemical markers, and promising results of three-marker panel: Current status and future directions. Cancers. 2024;16(6):1159. DOI: https://doi.org/10.3390/cancers16061159.</mixed-citation></citation-alternatives></ref><ref id="cit36"><label>36</label><citation-alternatives><mixed-citation xml:lang="ru">Protasova АE, Raskin GA, Sobivchak MS. Microsatellite instability as a reliable marker of coexisting endometrial cancer in atypical endometrial hyperplasia. Tumors of Female Reproductive System. 2024;20(2):105–112. (In Russ.). DOI: https://doi.org/10.17650/1994-4098-2024-16-2-105-112.</mixed-citation><mixed-citation xml:lang="en">Protasova АE, Raskin GA, Sobivchak MS. Microsatellite instability as a reliable marker of coexisting endometrial cancer in atypical endometrial hyperplasia. Tumors of Female Reproductive System. 2024;20(2):105–112. (In Russ.). DOI: https://doi.org/10.17650/1994-4098-2024-16-2-105-112.</mixed-citation></citation-alternatives></ref><ref id="cit37"><label>37</label><citation-alternatives><mixed-citation xml:lang="ru">Yurkevich AV, Oskolsky GI, Pervov Yu. Morphological and molecular genetic aspects of the nucleus ribosome organizer. Pacific Medical Journal. 2005;(1):85–87. (In Russ.). EDN: https://elibrary.ru/HOHYJX.</mixed-citation><mixed-citation xml:lang="en">Yurkevich AV, Oskolsky GI, Pervov Yu. Morphological and molecular genetic aspects of the nucleus ribosome organizer. Pacific Medical Journal. 2005;(1):85–87. (In Russ.). EDN: https://elibrary.ru/HOHYJX.</mixed-citation></citation-alternatives></ref><ref id="cit38"><label>38</label><citation-alternatives><mixed-citation xml:lang="ru">Bobrov IP, Cherdantseva TM, Klimachev VV, Brukhanov VM, Lazarev AF, Avdalyan AM, et al. Morphofunctional activity of nucleus organizers in renal cancer: Relationship with the histological structure of the peritumoral zone. Fundamental Research. 2011;(11–3):485–490. (In Russ.). EDN: https://elibrary.ru/OUKULJ.</mixed-citation><mixed-citation xml:lang="en">Bobrov IP, Cherdantseva TM, Klimachev VV, Brukhanov VM, Lazarev AF, Avdalyan AM, et al. Morphofunctional activity of nucleus organizers in renal cancer: Relationship with the histological structure of the peritumoral zone. Fundamental Research. 2011;(11–3):485–490. (In Russ.). EDN: https://elibrary.ru/OUKULJ.</mixed-citation></citation-alternatives></ref><ref id="cit39"><label>39</label><citation-alternatives><mixed-citation xml:lang="ru">Kobyakov DS, Lazarev AF, Lushnikova EL, Nepomnyashchikh LM. Nucleus organizers in Ki-67-positive squamous cell lung cancer cells: Clinical and morphological parallels and survival. Siberian Journal of Oncology. 2015;(2):58–63. (In Russ.). EDN: https://elibrary.ru/TSLRZT.</mixed-citation><mixed-citation xml:lang="en">Kobyakov DS, Lazarev AF, Lushnikova EL, Nepomnyashchikh LM. Nucleus organizers in Ki-67-positive squamous cell lung cancer cells: Clinical and morphological parallels and survival. Siberian Journal of Oncology. 2015;(2):58–63. (In Russ.). EDN: https://elibrary.ru/TSLRZT.</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
