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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">RUDN Journal of Medicine</journal-id><journal-title-group><journal-title xml:lang="en">RUDN Journal of Medicine</journal-title><trans-title-group xml:lang="ru"><trans-title>Вестник Российского университета дружбы народов. Серия: Медицина</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2313-0245</issn><issn publication-format="electronic">2313-0261</issn><publisher><publisher-name xml:lang="en">Peoples’ Friendship University of Russia named after Patrice Lumumba (RUDN University)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">31080</article-id><article-id pub-id-type="doi">10.22363/2313-0245-2022-26-2-188-193</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">Beck’s smallnodular sarcoid in dermatologist practice</article-title><trans-title-group xml:lang="ru"><trans-title>Мелкоузелковый саркоид Бека в практике дерматолога</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1599-301X</contrib-id><name-alternatives><name xml:lang="en"><surname>Mesnyankina</surname><given-names>Olga A.</given-names></name><name xml:lang="ru"><surname>Меснянкина</surname><given-names>О. А.</given-names></name></name-alternatives><email>olga_mesnyankina@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Ryabov</surname><given-names>Sergey K.</given-names></name><name xml:lang="ru"><surname>Рябов</surname><given-names>С. К.</given-names></name></name-alternatives><email>olga_mesnyankina@mail.ru</email><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Astrakhan State Medical University</institution></aff><aff><institution xml:lang="ru">Астраханский государственный медицинский университет</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">L.L.C. Consilium</institution></aff><aff><institution xml:lang="ru">ООО Консилиум</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2022-05-27" publication-format="electronic"><day>27</day><month>05</month><year>2022</year></pub-date><volume>26</volume><issue>2</issue><issue-title xml:lang="en">LARGE JOINTS ANATOMY AND PATHOLOGY</issue-title><issue-title xml:lang="ru">АНАТОМИЯ И ПАТОЛОГИИ КРУПНЫХ СУСТАВОВ</issue-title><fpage>188</fpage><lpage>193</lpage><history><date date-type="received" iso-8601-date="2022-05-27"><day>27</day><month>05</month><year>2022</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2022, Mesnyankina O.A., Ryabov S.K.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2022, Меснянкина О.А., Рябов С.К.</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="en">Mesnyankina O.A., Ryabov S.K.</copyright-holder><copyright-holder xml:lang="ru">Меснянкина О.А., Рябов С.К.</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/">http://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://journals.rudn.ru/medicine/article/view/31080">https://journals.rudn.ru/medicine/article/view/31080</self-uri><abstract xml:lang="en"><p style="text-align: justify;">The low incidence of skin sarcoidosis in the practice of a dermatologist, numerous clinical manifestations, similarities with other dermatoses cause difficulties in timely diagnosis, lead to diagnostic errors, and, as a consequence, untimely therapy. The presented clinical observation demonstrates the important role of conducting a detailed differential diagnostic search in patients with suspected skin sarcoidosis. Cutaneous manifestations of the pathological process can be combined with lesions of the lymph nodes, respiratory system and other organs, precede them or be isolated, in this regard, each patient with a verified diagnosis of skin sarcoidosis should be examined to exclude systemic signs of the disease. It should be emphasized that sarcoidosis of the skin can have a paraneoplastic character, being a marker of lymphoproliferative processes, myelodysplastic syndrome, therefore, correct and timely verification of the skin process may be a prerequisite for early diagnosis of other, possibly subclinically occurring pathological processes in the patient.</p></abstract><trans-abstract xml:lang="ru"><p style="text-align: justify;">Невысокая частота встречаемости саркоидоза кожи в практике дерматолога, многочисленные клинические проявления, сходство с другими дерматозами обусловливают сложности в своевременной постановке диагноза, приводят к диагностическим ошибкам, и, как следствие, несвоевременной терапии. Представленное клиническое наблюдение демонстрирует важную роль проведения детального дифференциальнодиагностического поиска у пациентов при подозрении на саркоидоз кожи. Кожные проявления патологического процесса могут сочетаться с поражением лимфатических узлов, дыхательной системы и других органов, предшествовать им или носить изолированный характер, в связи с этим каждый пациент с верифицированным диагнозом саркоидоза кожи должен быть обследован для исключения системных признаков заболевания. Следует подчеркнуть, что саркоидоз кожи может иметь паранеопластический характер, являясь маркером лимфопролиферативных процессов, миелодиспластического синдрома, поэтому правильная и своевременная верификация кожного процесса может являться необходимым условием ранней диагностики других, возможно субклинически протекающих патологических процессов у пациента.</p></trans-abstract><kwd-group xml:lang="en"><kwd>skin sarcoidosis</kwd><kwd>granulomatous inflammation</kwd><kwd>Beck’s small-n odular sarcoid</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>саркоидоз кожи</kwd><kwd>гранулематозное воспаление</kwd><kwd>мелкоузелковый саркоид Бека</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">Vizel AA. Sarcoidosis: from hypothesis to practice. Kazan. Publishing house “FEN”, Academy of Sciences of the Republic of Tatarstan. 2004. — 348 p. 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