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<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">vmireaviz</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник медицинского института «РЕАВИЗ». Реабилитация, Врач и Здоровье</journal-title><trans-title-group xml:lang="en"><trans-title>Bulletin of the Medical Institute "REAVIZ" (REHABILITATION, DOCTOR AND HEALTH)</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2226-762X</issn><issn pub-type="epub">2782-1579</issn><publisher><publisher-name>РЕАВИЗ</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.20340/vmi-rvz.2025.2.CASE.2</article-id><article-id custom-type="elpub" pub-id-type="custom">vmireaviz-1125</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>Клинический случай</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Clinical case</subject></subj-group></article-categories><title-group><article-title>Аденоматоидная опухоль придатка яичка: клинико-патоморфологический анализ случая</article-title><trans-title-group xml:lang="en"><trans-title>Adenomatoid tumors of the epididymidis: clinical and pathomorphological analysis of a case</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5996-9009</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мухина</surname><given-names>Т. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Mukhina</surname><given-names>T. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мухина Татьяна Сергеевна, Канд. мед. наук, доцент кафедры анатомии и гистологии человека</p><p>ул. Победы, д. 85, корп. 10, г. Белгород, 308015</p></bio><bio xml:lang="en"><p>Tatyana S. Mukhina, Cand. Sci. (Med.), Associate Professor, Department of Human Anatomy and Histology</p><p>Pobedy St., 85, bldg. 10, Belgorod, 308015</p></bio><email xlink:type="simple">mukhina@bsu.edu.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/0000-0002-2663-8569</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тверская</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Tverskaya</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Тверская Анастасия Владимировна, Канд. мед. наук, доцент кафедры анатомии и гистологии человека</p><p>ул. Победы, д. 85, корп. 10, г. Белгород, 308015</p></bio><bio xml:lang="en"><p>Anastasiya V. Tverskaya, Cand. Sci. (Med.), Associate Professor, Department of Human Anatomy and Histology</p><p>Pobedy St., 85, bldg. 10, Belgorod, 308015</p></bio><email xlink:type="simple">tverskaya@bsu.edu.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/0000-0002-4053-386X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Фентисов</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Fentisov</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Фентисов Виталий Владимирович, Канд. мед. наук, доцент, доцент кафедры анатомии и гистологии человека</p><p>ул. Победы, д. 85, корп. 10, г. Белгород, 308015</p></bio><bio xml:lang="en"><p>Vitaliy V. Fentisov, Cand. Sci. (Med.), associate professor, associate professor of the Department of Human Anatomy and Histology</p><p>Pobedy St., 85, bldg. 10, Belgorod, 308015</p></bio><email xlink:type="simple">lihuss@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Белгородский государственный национальный исследовательский университет</institution></aff><aff xml:lang="en"><institution>Belgorod State National Research University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>02</day><month>06</month><year>2025</year></pub-date><volume>15</volume><issue>2</issue><fpage>165</fpage><lpage>171</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Мухина Т.С., Тверская А.В., Фентисов В.В., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Мухина Т.С., Тверская А.В., Фентисов В.В.</copyright-holder><copyright-holder xml:lang="en">Mukhina T.S., Tverskaya A.V., Fentisov V.V.</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://vestnik.reaviz.ru/jour/article/view/1125">https://vestnik.reaviz.ru/jour/article/view/1125</self-uri><abstract><sec><title>Цель исследования</title><p>Цель исследования: представление клинико-патоморфологического анализа редкого случая аденоматоидной опухоли придатка яичка с описанием диагностических и морфологических особенностей данного новообразования.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. Проведено комплексное обследование пациента 41 года с безболезненным образованием в левой половине мошонки, включающее клинический осмотр, ультразвуковое исследование, магнитно-резонансную томографию, биохимический анализ крови на онкомаркеры и гистопатологическое исследование операционного материала с использованием рутинных (окраска гематоксилином и эозином) и иммуногистохимических методов (определение экспрессии панцитокератина АЕ1/АЕ3, кальретинина, CD31 и D2-40).</p></sec><sec><title>Результаты</title><p>Результаты. У пациента обнаружено солидное образование желтоватого цвета, диаметром 2 см, исходящее из головки придатка левого яичка. Гистологически опухоль представлена цепочками клеток, их кластерами, трабекулами и железистоподобными структурами, образованными крупными клетками с эпителиоидной морфологией. При иммуногистохимическом исследовании выявлена выраженная цитоплазматическая ко-экспрессия панцитокератина АЕ1/АЕ3 и кальретинина, отсутствие экспрессии CD31 и положительная мембранная реакция на D2-40 (подопланин), что подтверждает мезотелиальное происхождение опухоли.</p></sec><sec><title>Заключение</title><p>Заключение. Аденоматоидная опухоль придатка яичка является редкой доброкачественной опухолью мезотелиального происхождения, которая не может быть точно верифицирована только по клиническим, инструментальным и лабораторным данным. Решающее значение в диагностике имеет патоморфологическое исследование с обязательным иммуногистохимическим анализом, позволяющим установить мезотелиальный гистогенез опухоли. Хирургическое лечение с иссечением опухолевого узла в пределах здоровых тканей является адекватным и достаточным методом терапии, приводящим к полному выздоровлению. </p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Objective</title><p>Objective. To present the clinical and pathomorphological analysis of a rare case of adenomatoid tumor of the epididymis with a description of the diagnostic and morphological characteristics of this neoplasm.</p></sec><sec><title>Materials and methods</title><p> Materials and methods. A comprehensive examination was conducted on a 41-year-old patient with a painless mass in the left half of the scrotum, including clinical examination, ultrasound, magnetic resonance imaging, biochemical blood analysis for tumor markers, and histopathological examination of the surgical specimen using routine (hematoxylin and eosin staining) and immunohistochemical methods (detection of pancytokeratin AE1/AE3, calretinin, CD31, and D2-40 expression).</p></sec><sec><title>Results</title><p>Results. A solid yellowish mass, 2 cm in diameter, originating from the head of the left epididymis was found in the patient. Histologically, the tumor was represented by chains of cells, clusters, trabeculae, and gland-like structures formed by large cells with epithelioid morphology. Immunohistochemical examination revealed pronounced cytoplasmic coexpression of pancytokeratin AE1/AE3 and calretinin, absence of CD31 expression, and positive membrane reaction to D2-40 (podoplanin), confirming the mesothelial origin of the tumor.</p></sec><sec><title>Conclusion</title><p>Conclusion. Adenomatoid tumor of the epididymis is a rare benign tumor of mesothelial origin that cannot be accurately verified by clinical, instrumental, and laboratory data alone. Pathomorphological examination with mandatory immunohistochemical analysis is crucial for diagnosis, allowing the establishment of the mesothelial histogenesis of the tumor. Surgical treatment with excision of the tumor node within healthy tissue margins is an adequate and sufficient method of therapy, leading to complete recovery. </p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>Аденоматоидная опухоль [D000290]</kwd><kwd>Придаток яичка [D004824]</kwd><kwd>Доброкачественная опухоль [D018230]</kwd><kwd>Мезотелиома [D008654]</kwd><kwd>Мужская репродуктивная система [D005834]</kwd><kwd>Патоморфологический анализ [D010336]</kwd><kwd>Клинический случай [D002363]</kwd><kwd>Иммуногистохимия [D007150]</kwd><kwd>Урология [D014573]</kwd><kwd>Дифференциальная диагностика [D003937]</kwd><kwd>Мезотелиальные клетки [D008656]</kwd><kwd>Опухоли мошонки [D012614]</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Adenomatoid tumor [D000290]</kwd><kwd>Epididymis [D004824]</kwd><kwd>Benign neoplasm [D018230]</kwd><kwd>Mesothelioma [D008654]</kwd><kwd>Male genitalia [D005834]</kwd><kwd>Pathological analysis [D010336]</kwd><kwd>Case report [D002363]</kwd><kwd>Immunohistochemistry [D007150]</kwd><kwd>Urology [D014573]</kwd><kwd>Differential diagnosis [D003937]</kwd><kwd>Mesothelial cells [D008656]</kwd><kwd>Scrotal neoplasms [D012614]</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">Lucianò R, Tenace NP, Pederzoli F, Alfano M, Colecchia M, Montorsi F, Doglioni C, Salonia A. 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