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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.2025.4.MORPH.2</article-id><article-id custom-type="elpub" pub-id-type="custom">vmireaviz-1277</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>Морфология, патология</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Morphology, pathology</subject></subj-group></article-categories><title-group><article-title>Клиническое наблюдение пациента с папиллярной опухолью почки с реверсивной полярностью ядер</article-title><trans-title-group xml:lang="en"><trans-title>Clinical observation of a patient with a papillary tumor of the kidney with reversed nuclear polarity</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3343-6973</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гаркуша</surname><given-names>Т. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Garkusha</surname><given-names>T. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Гаркуша Татьяна Андреевна, Ассистент кафедры патологической анатомии им. профессора П.Г. Подзолкова; врач-патологоанатом Вклад автора: автор идеи, написание рабочего варианта рукописи, ответственность за целостность всех частей статьи, подготовка иллюстраций.</p><p>ул. Партизана-Железняка, д. 1, г. Красноярск, 660022;ул. Партизана-Железняка, д. 3Д, г. Красноярск, 660022</p></bio><bio xml:lang="en"><p>Tat'yana A. Garkusha, Assistant of the Department of Pathological Anatomy named after Professor P.G. Podzolkov; pathologist Author's contribution: author of the idea, writing the working version of the manuscript, responsibility for the integrity of all parts of the article, preparation of illustrations.</p><p>1, Partizana Zheleznyaka str., Krasnoyarsk, 660022;Partizana Zheleznyaka str., 3D, Krasnoyarsk, 660022</p></bio><email xlink:type="simple">t.garkusha@internet.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/0009-0000-5050-9559</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Герасимов</surname><given-names>Д. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Gerasimov</surname><given-names>D. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Герасимов Денис Дмитриевич, Студент лечебного факультета Вклад автора: написание рабочего варианта рукописи, ответственность за целостность всех частей статьи.</p><p>ул. Партизана-Железняка, д. 1, г. Красноярск, 660022</p></bio><bio xml:lang="en"><p>Denis D. Gerasimov, Student, Faculty of General Medicine Author's contribution: writing the final draft of the manuscript and is responsible for the integrity of all parts of the article.</p><p>1, Partizana Zheleznyaka str., Krasnoyarsk, 660022</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0000-0374-8530</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Давидова</surname><given-names>Д. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Davidova</surname><given-names>D. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Давидова Дарья Владиславовна, Студент лечебного факультета Вклад автора: написание рабочего варианта рукописи, ответственность за целостность всех частей статьи.</p><p>ул. Партизана-Железняка, д. 1, г. Красноярск, 660022</p></bio><bio xml:lang="en"><p>Dar'ya V. Davidova, Student, Faculty of General Medicine Author's contribution: writing the final draft of the manuscript and is responsible for the integrity of all parts of the article.</p><p>1, Partizana Zheleznyaka str., Krasnoyarsk, 660022</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4438-1717</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Алябьев</surname><given-names>Ф. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Alyab'ev</surname><given-names>F. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Алябьев Федор Валерьевич, Д-р мед. наук, профессор, заведующий кафедры патологической анатомии им. профессора П.Г. Подзолкова, заведующий кафедры судебной медицины и ПО Вклад автора: научный консультант, редактирование текста статьи.</p><p>ул. Партизана-Железняка, д. 1, г. Красноярск, 660022</p></bio><bio xml:lang="en"><p>Fedor V. Alyab'yev, Dr. Cand. Sci. (Med.), Professor, Head of the Department of Pathological Anatomy named after Professor P.G. Podzolkov, Head of the Department of Forensic Medicine and PO Author's contribution: scientific consultant, editing the text of the article.</p><p>1, Partizana Zheleznyaka str., Krasnoyarsk, 660022</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Хлуднева</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Khludneva</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Хлуднева Наталья Владимировна, Канд. мед. наук, доцент, кафедры судебной медицины и ПО Вклад автора: научный консультант, редактирование текста статьи.</p><p>ул. Партизана-Железняка, д. 1, г. Красноярск, 660022</p></bio><bio xml:lang="en"><p>Natal'ya V. Khludneva, Cand. Sci. (Med.), Docent, department of forensic medicine and PO Author's contribution: scientific consultant, editing the text of the article.</p><p>1, Partizana Zheleznyaka str., Krasnoyarsk, 660022</p></bio><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Красноярский государственный медицинский университет имени профессора В.Ф. Войно-Ясенецкого;&#13;
Красноярское краевое патологоанатомическое бюро</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Krasnoyarsk State Medical University named after Professor V.F. Voyno-Yasenetsky;&#13;
Krasnoyarsk Regional Pathological Anatomy Bureau</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Красноярский государственный медицинский университет имени профессора В.Ф. Войно-Ясенецкого</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Krasnoyarsk State Medical University named after Professor V.F. Voyno-Yasenetsky</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>28</day><month>10</month><year>2025</year></pub-date><volume>15</volume><issue>4</issue><fpage>112</fpage><lpage>115</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Гаркуша Т.А., Герасимов Д.Д., Давидова Д.В., Алябьев Ф.В., Хлуднева Н.В., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Гаркуша Т.А., Герасимов Д.Д., Давидова Д.В., Алябьев Ф.В., Хлуднева Н.В.</copyright-holder><copyright-holder xml:lang="en">Garkusha T.A., Gerasimov D.D., Davidova D.V., Alyab'ev F.V., Khludneva N.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/1277">https://vestnik.reaviz.ru/jour/article/view/1277</self-uri><abstract><p>Папиллярная опухоль почки с реверсивной полярностью ядер относится к редким новообразованиям с благоприятным прогнозом, недавно выделенным отдельно в классификацию опухолей мочевыделительной системы (2022 года). Ранее данная опухоль рассматривалась как подтип папиллярной почечно-клеточной карциномы. Однако папиллярная опухоль почки с реверсивной полярностью ядер демонстрирует уникальные морфологические, иммуногистохимические и генетические особенности, вклющие частые мутации KRAS и отсутствие хромосомных аномалий, характерных для папиллярной почечно-клеточной карциномы. Основные диагностические сложности связаны с гистопатологическим сходством с агрессивными опухолями почки (например папиллярно почечноклеточной карциномой) и вариабельностью экспрессии некоторых маркеров. Ошибки в верификации могут привести к избыточной терапии, тогда как папиллярная опухоль почки с реверсивной полярностью ядер требует менее агрессивного подхода. В работе представлено клиническое наблюдение пациентки 65 лет с папиллярной опухолью почки с реверсивной полярностью ядер. Данный случай представляет интерес в связи с редкостью данной патологии и сложностью её диагностики.</p></abstract><trans-abstract xml:lang="en"><p>Papillary renal tumor with reverse nuclear polarity is a rare neoplasm with a favorable prognosis, recently identified separately in the classification of tumors of the urinary tract (2022). Previously, this tumor was considered a subtype of papillary renal cell carcinoma. However, papillary renal tumor with reverse nuclear polarity demonstrates unique morphological, immunohistochemical and genetic features, including frequent KRAS mutations and the absence of chromosomal abnormalities characteristic of papillary renal cell carcinoma. The main diagnostic difficulties are related to histopathological similarities with aggressive renal tumors (eg, papillary renal cell carcinoma) and variability in the expression of some markers. Errors in verification may lead to overtherapy, while papillary renal tumor with reverse nuclear polarity requires a less aggressive approach. The paper presents a clinical observation of a 65-year-old female patient with a papillary tumor of the kidney with reverse nuclear polarity. This case is of interest due to the rarity of this pathology and the complexity of its diagnosis.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>папиллярная опухоль почки [нет MeSH]</kwd><kwd>реверсивная полярность ядер [нет MeSH]</kwd><kwd>почечно-клеточная карцинома [D002292]</kwd><kwd>папиллярная почечно-клеточная карцинома [D002292]</kwd><kwd>мутации KRAS [D016283]</kwd><kwd>иммуногистохимия [D007150]</kwd><kwd>опухоли почки [D007680]</kwd><kwd>генетические маркеры [D005819]</kwd><kwd>дифференциальная диагностика [D003937]</kwd><kwd>гистопатология [D006653]</kwd><kwd>онкоурология [нет MeSH]</kwd><kwd>хромосомные аномалии [D002869]</kwd><kwd>клиническое наблюдение [D002363]</kwd></kwd-group><kwd-group xml:lang="en"><kwd>papillary renal tumor [нет MeSH]</kwd><kwd>reversed nuclear polarity [нет MeSH]</kwd><kwd>renal cell carcinoma [D002292]</kwd><kwd>papillary renal cell carcinoma [D002292]</kwd><kwd>KRAS mutations [D016283]</kwd><kwd>immunohistochemistry [D007150]</kwd><kwd>kidney neoplasms [D007680]</kwd><kwd>genetic markers [D005819]</kwd><kwd>differential diagnosis [D003937]</kwd><kwd>histopathology [D006653]</kwd><kwd>uro-oncology [нет MeSH]</kwd><kwd>chromosomal abnormalities [D002869]</kwd><kwd>case report [D002363]</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">Urinary and Male Genital Tumours WHO Classification of Tumours, 5th Edition, Volume 8 WHO Classification of Tumours Editorial Board. 2022. 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