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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="other" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">The Clinician</journal-id><journal-title-group><journal-title xml:lang="en">The Clinician</journal-title><trans-title-group xml:lang="ru"><trans-title>Клиницист</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1818-8338</issn><issn publication-format="electronic">2412-8775</issn><publisher><publisher-name xml:lang="en">Publishing House ABV Press</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">515</article-id><article-id pub-id-type="doi">10.17650/1818-8338-2022-16-4-K669</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>CASE REPORT</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ОПИСАНИЕ СЛУЧАЯ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">A case of polymorphic leukocytoclastic vasculitis associated with renal neoplasia</article-title><trans-title-group xml:lang="ru"><trans-title>Случай полиморфного лейкоцитокластического васкулита, ассоциированного с неоплазией почки</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7410-9784</contrib-id><name-alternatives><name xml:lang="en"><surname>Klimenko</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Клименко</surname><given-names>А. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Alesya Aleksandrovna Klimenko</p><p>1 Ostrovityanova St., Moscow 117997</p></bio><bio xml:lang="ru"><p>Алеся Александровна Клименко</p><p>117997 Москва, ул. Островитянова, 1</p></bio><email>aaklimenko@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4669-1006</contrib-id><name-alternatives><name xml:lang="en"><surname>Shostak</surname><given-names>N. A.</given-names></name><name xml:lang="ru"><surname>Шостак</surname><given-names>Н. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>1 Ostrovityanova St., Moscow 117997</p></bio><bio xml:lang="ru"><p>117997 Москва, ул. Островитянова, 1</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8757-9585</contrib-id><name-alternatives><name xml:lang="en"><surname>Gaffarova</surname><given-names>A. S.</given-names></name><name xml:lang="ru"><surname>Гаффарова</surname><given-names>А. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>1 Ostrovityanova St., Moscow 117997</p></bio><bio xml:lang="ru"><p>117997 Москва, ул. Островитянова, 1</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9152-3234</contrib-id><name-alternatives><name xml:lang="en"><surname>Kondrashov</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Кондрашов</surname><given-names>А. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>1 Ostrovityanova St., Moscow 117997</p></bio><bio xml:lang="ru"><p>117997 Москва, ул. Островитянова, 1</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8814-9704</contrib-id><name-alternatives><name xml:lang="en"><surname>Schmidt</surname><given-names>E. I.</given-names></name><name xml:lang="ru"><surname>Шмидт</surname><given-names>Е. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>1 Ostrovityanova St., Moscow 117997</p><p>8 Lenin Ave., Moscow 119049</p></bio><bio xml:lang="ru"><p>117997 Москва, ул. Островитянова, 1</p><p>119049 Москва, Ленинский просп., 8</p></bio><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">N.I. Pirogov Russian National Research Medical University</institution></aff><aff><institution xml:lang="ru">ФГАОУ ВО «Российский национальный исследовательский медицинский университет им. Н. И. Пирогова» Минздрава России</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">N.I. Pirogov City Clinical Hospital No. 1</institution></aff><aff><institution xml:lang="ru">ГБУЗ «Городская клиническая больница им. Н. И. Пирогова»</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2022-10-15" publication-format="electronic"><day>15</day><month>10</month><year>2022</year></pub-date><volume>16</volume><issue>4</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>33</fpage><lpage>38</lpage><history><date date-type="received" iso-8601-date="2023-02-09"><day>09</day><month>02</month><year>2023</year></date><date date-type="accepted" iso-8601-date="2023-02-09"><day>09</day><month>02</month><year>2023</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2022, Klimenko A.A., Shostak N.A., Gaffarova A.S., Kondrashov A.A., Schmidt E.I.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2022, Клименко А.А., Шостак Н.А., Гаффарова А.С., Кондрашов А.А., Шмидт Е.И.</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="en">Klimenko A.A., Shostak N.A., Gaffarova A.S., Kondrashov A.A., Schmidt E.I.</copyright-holder><copyright-holder xml:lang="ru">Клименко А.А., Шостак Н.А., Гаффарова А.С., Кондрашов А.А., Шмидт Е.И.</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/">https://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://klinitsist.abvpress.ru/Klin/article/view/515">https://klinitsist.abvpress.ru/Klin/article/view/515</self-uri><abstract xml:lang="en"><p><bold>Objective: </bold>to describe a clinical case of polymorphic leukocytoclastic vasculitis (PLCV) associated with renal neoplasia.</p><p><bold>Materials and methods. </bold>Patient K., a man, 67 y. o., was admitted to the surgical department No. 2 of the N. I. Pirogov State Clinical Hospital No. 1 with cardiac complaints and heart failure decompensation symptoms, severe respiratory insufficiency associated right lower lobe pneumonia. Besides cardiac function evaluation and pneumonia managing there was a conducting of differential diagnostic search to clarify the genesis of ulcerative necrotic rashs among systemic vasculitis, paraneoplastic syndrome including hematologic problems and sepsis.</p><p><bold>Results. </bold>It was no data for systemic connective tissue diseases and systemic vasculitis during clinical examination and immunological diagnostics. On contrast-enhanced multispiral computed tomography of abdomen and retroperitoneal space there was latent malignant neoplasia of left kidney Т2аN1M0. PLCV was considered to paraneoplastic syndrome associated with malignancy. Due to the progression of vasculitis and the patient’s refusal of surgical treatment was prescribed GC 0.5 mg / kg / day as a result positive dynamics was noted.</p><p><bold>Conclusion. </bold>This clinical case demonstrates necessity of providing examination aimed at malignancy excluding for early neoplasm’s detecting for patients with vasculitis.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Цель работы </bold>– описание клинического случая полиморфного лейкоцитокластического васкулита (ПЛКВ), ставшего первым и единственным проявлением злокачественной неоплазии почки латентного течения.</p><p><bold>Материалы и методы. </bold>Пациент К., мужчина 67 лет, госпитализирован с кардиальными жалобами, явлениями декомпенсации хронической сердечной недостаточности, дыхательной недостаточностью на фоне нижнедолевой правосторонней пневмонии. Кроме этого, при осмотре выявлены болезненные распространенные язвенные дефекты на коже нижних и верхних конечностей и живота. Помимо исследований, направленных на предмет уточнения кардиальной функции и распространенности пневмонии, проводился дифференциально-диагностический поиск для уточнения генеза язвенно-некротических высыпаний с исключением системного васкулита (СВ), онкологического заболевания (в том числе гематологического) и сепсиса.</p><p><bold>Результаты. </bold>При клинико-иммунологическом обследовании данных о системном заболевании соединительной ткани и СВ не выявлено. При мультиспиральной компьютерной томографии органов брюшной полости и забрюшинного пространства с двойным контрастированием обнаружена злокачественная неоплазия левой почки Т2аN1M0 латентного течения. ПЛКВ расценен как паранеопластическая реакция на выявленное онкозаболевание. В связи с прогрессированием васкулита и отказом пациента от хирургического вмешательства назначены глюкокортикоиды в дозе 0,5 мг / кг в сутки в течение 14 дней с постепенной деэскалацией, на фоне приема которых отмечалась положительная динамика.</p><p><bold>Заключение. </bold>Описание данного клинического случая служит демонстрацией необходимости онкологического поиска при выявлении васкулита с целью своевременной диагностики злокачественного новообразования.</p></trans-abstract><kwd-group xml:lang="en"><kwd>paraneoplastic process</kwd><kwd>polymorphic leukocytoclastic vasculitis</kwd><kwd>neoplasia</kwd><kwd>chronic heart failure</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>паранеопластический процесс</kwd><kwd>полиморфный лейкоцитокластический васкулит</kwd><kwd>злокачественная неоплазия</kwd><kwd>хроническая сердечная недостаточность</kwd><kwd>опухоль почки</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Park H.J., Ranganathan P. 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