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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="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Russian Journal of Skin and Venereal Diseases</journal-id><journal-title-group><journal-title xml:lang="en">Russian Journal of Skin and Venereal Diseases</journal-title><trans-title-group xml:lang="ru"><trans-title>Российский журнал кожных и венерических болезней</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1560-9588</issn><issn publication-format="electronic">2412-9097</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">653977</article-id><article-id pub-id-type="doi">10.17816/dv653977</article-id><article-id pub-id-type="edn">TGCNMF</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>DERMATOLOGY</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ДЕРМАТОЛОГИЯ</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Intravascular histiocytosis of the skin</article-title><trans-title-group xml:lang="ru"><trans-title>Внутрисосудистый гистиоцитоз кожи</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0005-3772-6643</contrib-id><contrib-id contrib-id-type="spin">2641-6658</contrib-id><name-alternatives><name xml:lang="en"><surname>Bulanov</surname><given-names>Dmitriy V.</given-names></name><name xml:lang="ru"><surname>Буланов</surname><given-names>Дмитрий Владимирович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Cand. Sci. (Medicine), Associate Professor</p></bio><bio xml:lang="ru"><p>канд. мед. наук, доцент</p></bio><email>dbulanov81@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0002-9236-6714</contrib-id><contrib-id contrib-id-type="spin">1653-2617</contrib-id><name-alternatives><name xml:lang="en"><surname>Podverbnaya</surname><given-names>Julia S.</given-names></name><name xml:lang="ru"><surname>Подвербная</surname><given-names>Юлия Сергеевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>julia_123_julia_123@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">The Russian National Research Medical University named after N.I. Pirogov</institution></aff><aff><institution xml:lang="ru">Российский национальный исследовательский медицинский университет имени Н.И. Пирогова</institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2025-07-27" publication-format="electronic"><day>27</day><month>07</month><year>2025</year></pub-date><pub-date date-type="pub" iso-8601-date="2025-07-31" publication-format="electronic"><day>31</day><month>07</month><year>2025</year></pub-date><volume>28</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>293</fpage><lpage>300</lpage><history><date date-type="received" iso-8601-date="2025-02-09"><day>09</day><month>02</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-06-02"><day>02</day><month>06</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Eco-Vector</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Эко-Вектор</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Eco-Vector</copyright-holder><copyright-holder xml:lang="ru">Эко-Вектор</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/" start_date="2028-07-31"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by-nc-nd/4.0/</ali:license_ref></license></permissions><self-uri xlink:href="https://rjsvd.com/1560-9588/article/view/653977">https://rjsvd.com/1560-9588/article/view/653977</self-uri><abstract xml:lang="en"><p>Intravascular histiocytosis is a rare dermatologic condition characterized by pathological vascular dilation and accumulation of histiocytes within the lumen of blood vessels. Despite its rarity, challenges in diagnosis and treatment persist due to the absence of standardized protocols and a limited understanding of the disease pathogenesis.</p> <p>A key initiating factor is damage to the vascular wall, promoting histiocyte migration and proliferation within vessels. This process may be triggered by infections, cardiovascular dysfunction, hepatic or renal pathology. However, some cases occur in individuals without comorbidities, suggesting the involvement of unidentified triggers or genetic predispositions.</p> <p>Clinical manifestations vary and include ill-defined erythematous to violaceous patches, plaques, nodules, and papules, most commonly affecting the trunk and extremities. The lesions may also present as hemorrhagic nodules and papules, complicating the differential diagnosis with other dermatoses. The condition’s rarity and non-specific presentation often result in misdiagnosis and inappropriate treatment, worsening the clinical course.</p> <p>Currently, there is no universal treatment protocol for intravascular histiocytosis. Corticosteroids are frequently used, but their efficacy and long-term outcomes remain poorly defined.</p> <p>This article describes a clinical case of a female patient presenting with papular eruptions on the neck and scalp. The diagnosis was confirmed by dermatoscopy and histological examination of a skin biopsy. The case highlights the need for further research to establish standardized diagnostic and therapeutic strategies for intravascular histiocytosis.</p></abstract><trans-abstract xml:lang="ru"><p>Внутрисосудистый гистиоцитоз ― редкое заболевание кожи, характеризующееся патологическим расширением сосудов и скоплением гистиоцитов в их просвете. Несмотря на редкость заболевания, проблема диагностики и лечения внутрисосудистого гистиоцитоза остаётся актуальной из-за отсутствия стандартизированных подходов и ограниченного понимания механизмов его развития.</p> <p>Ключевым фактором, запускающим развитие внутрисосудистого гистиоцитоза, является повреждение сосудистых стенок, что способствует миграции и пролиферации гистиоцитов внутри сосудов. Этот процесс может быть обусловлен различными причинами ― инфекциями, нарушениями в работе сердечно-сосудистой системы, патологией печени и почек. Тем не менее заболевание иногда возникает у людей без сопутствующих факторов, что предполагает наличие неизвестных триггеров или генетической предрасположенности.</p> <p>Клинические проявления внутрисосудистого гистиоцитоза разнообразны ― плохо очерченные эритематозные пятна фиолетового цвета, бляшки, узелки и папулы, чаще всего с локализацией в области туловища и конечностей. Высыпания могут принимать также форму папул и геморрагических узелков, что затрудняет дифференциальную диагностику с другими дерматологическими заболеваниями. Уникальность симптоматики и редкость патологии зачастую приводят к постановке неправильных диагнозов и назначению неадекватной терапии, что усугубляет течение болезни.</p> <p>На данный момент универсального протокола лечения внутрисосудистого гистиоцитоза не существует. В качестве одной из терапевтических стратегий часто применяют стероидные препараты, однако их эффективность и долгосрочные результаты недостаточно изучены.</p> <p>Настоящая статья описывает клинический случай пациентки, у которой кожные высыпания в виде папул обнаруживались в области шеи и волосистой части головы. Диагноз был подтверждён с помощью дерматоскопии и гистологического исследования биоптата кожи. Представленный случай подчёркивает важность дальнейших исследований в области внутрисосудистого гистиоцитоза, направленных на разработку унифицированных диагностических и терапевтических подходов.</p></trans-abstract><kwd-group xml:lang="en"><kwd>intravascular histiocytosis</kwd><kwd>blood vessels</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>внутрисосудистый гистиоцитоз</kwd><kwd>интраваскулярный гистиоцитоз</kwd><kwd>кровеносные сосуды</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Demirkesen C, Kran T, Leblebici C, et al. Intravascular/intralymphatic histiocytosis: A report of 3 cases. Am J Dermatopathol. 2015;37(10):783–789. doi: 10.1097/DAD.0000000000000257</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>O’Grady JT, Shahidullah H, Doherty VR, Al-Nafussi A. Intravascular histiocytosis. 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