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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">Vestnik dermatologii i venerologii</journal-id><journal-title-group><journal-title xml:lang="en">Vestnik dermatologii i venerologii</journal-title><trans-title-group xml:lang="ru"><trans-title>Вестник дерматологии и венерологии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0042-4609</issn><issn publication-format="electronic">2313-6294</issn><publisher><publisher-name xml:lang="en">Rossijskoe Obschestvo Dermatovenerologov i Kosmetologov</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">16784</article-id><article-id pub-id-type="doi">10.25208/vdv16784</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>CLINICAL CASE REPORTS</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>НАБЛЮДЕНИЕ ИЗ ПРАКТИКИ</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">Paraneoplastic pembigus: clinical and diagnostic features</article-title><trans-title-group xml:lang="ru"><trans-title>Паранеопластическая пузырчатка: особенности клиники и диагностики</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3805-8489</contrib-id><contrib-id contrib-id-type="spin">3604-6491</contrib-id><name-alternatives><name xml:lang="en"><surname>Karamova</surname><given-names>Arfenya E.</given-names></name><name xml:lang="ru"><surname>Карамова</surname><given-names>Арфеня Эдуардовна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Cand. Sci. (Med.), Assistant Professor</p></bio><bio xml:lang="ru"><p>кандидат медицинских наук, доцент</p></bio><email>karamova@cnikvi.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2553-0484</contrib-id><contrib-id contrib-id-type="spin">9552-7850</contrib-id><name-alternatives><name xml:lang="en"><surname>Znamenskaya</surname><given-names>Lyudmila F.</given-names></name><name xml:lang="ru"><surname>Знаменская</surname><given-names>Людмила Федоровна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Dr. Sci. (Med.)</p></bio><bio xml:lang="ru"><p>доктор медицинских наук</p></bio><email>znaml@cnikvi.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1141-9352</contrib-id><contrib-id contrib-id-type="spin">1307-1189</contrib-id><name-alternatives><name xml:lang="en"><surname>Nefedova</surname><given-names>Maria A.</given-names></name><name xml:lang="ru"><surname>Нефедова</surname><given-names>Мария Андреевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Junior Researcher, Dermatology Department</p></bio><bio xml:lang="ru"><p>младший научный сотрудник отдела дерматологии</p></bio><email>nefedova.maria.arb@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0004-8286-9427</contrib-id><name-alternatives><name xml:lang="en"><surname>Mekhdieva</surname><given-names>Egana S.</given-names></name><name xml:lang="ru"><surname>Мехдиева</surname><given-names>Егана Санановна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Dermatovenereologist</p></bio><bio xml:lang="ru"><p>врач-дерматовенеролог</p></bio><email>dr.mekhdieva@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7723-8701</contrib-id><contrib-id contrib-id-type="spin">9506-0978</contrib-id><name-alternatives><name xml:lang="en"><surname>Girko</surname><given-names>Ekaterina V.</given-names></name><name xml:lang="ru"><surname>Гирько</surname><given-names>Екатерина Витальевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>katrin_45_34@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">State Research Center of Dermatovenereology and Cosmetology</institution></aff><aff><institution xml:lang="ru">Государственный научный центр дерматовенерологии и косметологии</institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2024-07-25" publication-format="electronic"><day>25</day><month>07</month><year>2024</year></pub-date><pub-date date-type="pub" iso-8601-date="2024-08-26" publication-format="electronic"><day>26</day><month>08</month><year>2024</year></pub-date><volume>100</volume><issue>4</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>85</fpage><lpage>93</lpage><history><date date-type="received" iso-8601-date="2024-05-08"><day>08</day><month>05</month><year>2024</year></date><date date-type="accepted" iso-8601-date="2024-07-15"><day>15</day><month>07</month><year>2024</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2024, Karamova A.E., Znamenskaya L.F., Nefedova M.A., Mekhdieva E.S., Girko E.V.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2024, Карамова А.Э., Знаменская Л.Ф., Нефедова М.А., Мехдиева Е.С., Гирько Е.В.</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="en">Karamova A.E., Znamenskaya L.F., Nefedova M.A., Mekhdieva E.S., Girko E.V.</copyright-holder><copyright-holder xml:lang="ru">Карамова А.Э., Знаменская Л.Ф., Нефедова М.А., Мехдиева Е.С., Гирько Е.В.</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-nc/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://vestnikdv.ru/jour/article/view/16784">https://vestnikdv.ru/jour/article/view/16784</self-uri><abstract xml:lang="en"><p>Paraneoplastic pemphigus is an autoimmune dermatosis following against the background of neoplasia. It can occur before cancer is diagnosed, during or shortly after treatment, and even during remission of the underlying disease. Typically, paraneoplastic pemphigus only refers to the deposition of IgG. The article is devoted to paraneoplastic IgA/IgG pemphigus, which is one of the rare forms of paraneoplastic pemphigus in which deposition of IgA together with IgG is observed. We have described a clinical case of a patient who developed various rashes during the period of remission of chronic lymphocytic leukemia. Diagnosis of paraneoplastic IgA/IgG pemphigus based on clinical and anamnestic data, the results of a diagnostic skin biopsy, immunofluorescence test, consultation with a hematologist and lab tests. Difficulties in diagnosing paraneoplastic pemphigus are due to the polymorphism of rashes and the variety of clinical and laboratory parameters, which may depend on concomitant oncological pathology. A diagnostic search requires an assessment of the clinical picture of the disease, a carefully collected anamnesis, and a complete diagnostic algorithm for patients with bullous dermatoses.</p></abstract><trans-abstract xml:lang="ru"><p>Паранеопластическая пузырчатка — это аутоиммунный дерматоз, протекающий на фоне неоплазии. Может возникать до диагностирования онкологического заболевания, в течение или вскоре после лечения и даже в период ремиссии основного заболевания. Как правило, под паранеопластической пузырчаткой подразумевается отложение только IgG. Статья посвящена паранеопластической IgA/IgG-пузырчатке, являющейся одной из редких форм паранеопластических пузырчаток, при которой наблюдается отложение и IgA, и IgG. Описан клинический случай больной, у которой в период ремиссии хронического лимфоцитарного лейкоза появились разнообразные высыпания. На основании клинико-анамнестических данных, результатов диагностической биопсии кожи, исследования реакции иммунофлуоресценции, консультации врача-гематолога, а также клинико-лабораторных исследований поставлен диагноз «паранеопластическая IgA/IgG-пузырчатка». Трудности диагностики паранеопластических пузырчаток обусловлены полиморфизмом высыпаний и разнообразием клинико-лабораторных показателей, которые, возможно, зависят от сопутствующей онкологической патологии. Для диагностического поиска необходимы оценка клинической картины заболевания, тщательно собранный анамнез и проведение полного алгоритма диагностики пациентов с буллезными дерматозами.</p></trans-abstract><kwd-group xml:lang="en"><kwd>paraneoplastic pemphigus</kwd><kwd>neoplasia</kwd><kwd>IgG</kwd><kwd>IgA</kwd><kwd>immunofluorescence test</kwd><kwd>case report</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>паранеопластическая пузырчатка</kwd><kwd>неоплазия</kwd><kwd>IgG</kwd><kwd>IgA</kwd><kwd>реакция иммунофлуоресценции (РИФ)</kwd><kwd>клинический случай</kwd></kwd-group><funding-group><funding-statement xml:lang="en">State Research Center of Dermatovenereology and Cosmetology of the Ministry of Health of the Russian Federation No. 056-00003-24-02 “Development of a medical device for laboratory diagnostics of vulgar pemphigus” for 2024 and for the planning period 2025 and 2026.</funding-statement><funding-statement xml:lang="ru">ФГБУ «ГНЦДК» Минздрава России, государственное задание № 056-00003-24-02 «Разработка медицинского изделия для лабораторной диагностики вульгарной пузырчатки» на 2024 г. и на плановый период 2025 и 2026 гг.</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Anhalt GJ, Kim SC, Stanley JR, Korman NJ, Jabs DA, Kory M, et al. 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