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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">Almanac of Clinical Medicine</journal-id><journal-title-group><journal-title xml:lang="en">Almanac of Clinical Medicine</journal-title><trans-title-group xml:lang="ru"><trans-title>Альманах клинической медицины</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2072-0505</issn><issn publication-format="electronic">2587-9294</issn><publisher><publisher-name xml:lang="en">Moscow Regional Research and Clinical Institute (MONIKI)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">1636</article-id><article-id pub-id-type="doi">10.18786/2072-0505-2021-49-064</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>CLINICAL CASES</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>КЛИНИЧЕСКИЕ НАБЛЮДЕНИЯ</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">Adult-onset of Langerhans cell histiocytosis: a clinical case</article-title><trans-title-group xml:lang="ru"><trans-title>Дебют гистиоцитоза из клеток Лангерганса во взрослом возрасте. Клиническое наблюдение</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Chernysheva</surname><given-names>Olga V.</given-names></name><name xml:lang="ru"><surname>Чернышева</surname><given-names>Ольга Владимировна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dermatovenereologist</p></bio><bio xml:lang="ru"><p>врач-дерматовенеролог</p></bio><email>alb9696@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Dorokhina</surname><given-names>Olga V.</given-names></name><name xml:lang="ru"><surname>Дорохина</surname><given-names>Ольга Владимировна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, PhD, Dermatovenereologist</p></bio><bio xml:lang="ru"><p>канд. мед. наук, врач-дерматовенеролог</p></bio><email>alb9696@yandex.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Khlebnikova</surname><given-names>Albina N.</given-names></name><name xml:lang="ru"><surname>Хлебникова</surname><given-names>Альбина Николаевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, PhD, Professor, Dermatovenereologist</p></bio><bio xml:lang="ru"><p>доктор мед. наук, профессор, врач-дерматовенеролог</p></bio><email>alb9696@yandex.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Selezneva</surname><given-names>Elena V.</given-names></name><name xml:lang="ru"><surname>Селезнева</surname><given-names>Елена Владимировна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, PhD, Dermatovenereologist</p></bio><bio xml:lang="ru"><p>канд. мед. наук, врач-дерматовенеролог</p></bio><email>alb9696@yandex.ru</email><xref ref-type="aff" rid="aff3"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Shchyolkovo’s dermatovenereologiс clinic</institution></aff><aff><institution xml:lang="ru">Щелковский кожно-венерологический диспансер</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Mytishсhi’s dermatovenereologic clinic</institution></aff><aff><institution xml:lang="ru">Мытищинский кожно-венерологический диспансер</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Oxygon clinic</institution></aff><aff><institution xml:lang="ru">ООО «Оксигон»</institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2022-01-21" publication-format="electronic"><day>21</day><month>01</month><year>2022</year></pub-date><pub-date date-type="pub" iso-8601-date="2021-12-24" publication-format="electronic"><day>24</day><month>12</month><year>2021</year></pub-date><volume>49</volume><issue>8</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>558</fpage><lpage>563</lpage><history><date date-type="received" iso-8601-date="2022-01-20"><day>20</day><month>01</month><year>2022</year></date><date date-type="accepted" iso-8601-date="2022-01-20"><day>20</day><month>01</month><year>2022</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2021, Chernysheva O.V., Dorokhina O.V., Khlebnikova A.N., Selezneva E.V.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2021, Чернышева О.В., Дорохина О.В., Хлебникова А.Н., Селезнева Е.В.</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="en">Chernysheva O.V., Dorokhina O.V., Khlebnikova A.N., Selezneva E.V.</copyright-holder><copyright-holder xml:lang="ru">Чернышева О.В., Дорохина О.В., Хлебникова А.Н., Селезнева 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/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://almclinmed.ru/jour/article/view/1636">https://almclinmed.ru/jour/article/view/1636</self-uri><abstract xml:lang="en"><p>Langerhans cell histiocytosis is mainly diagnosed in children, and its manifestation in adult age is quite uncommon. Skin rashes may be non-specific and mimic a number of dermatoses. Therefore, the clinical diagnosis is challenging and as a rule, such patients are misinterpreted and managed for other disorders by a dermatologist for some years.</p> <p>We present a clinical case of Langerhans cell histiocytosis with skin involvement in a 35-year female patient, who had been treated by a dermatologist for 2 years for pyoderma, seborrheic dermatitis, and skin fold candidiasis. Taking into account the clinical signs and symptoms and age of manifestation, we initially suspected familial benign pemphigus (Hailey-Hailey disease) or follicular dyskeratosis (Darier's disease). However, the histological assessment showed Langerhans cell histiocytosis confirmed by immunohistochemistry with anti-langerin, anti-CD1a, and anti-protein S-100 antibodies. The patient was referred to a hematologist for further work-upand specific treatment.</p> <p>In cases of any treatment resistant disorders, which do not respond to long-term conventional treatment, it is necessary to reconsider the diagnosis by means of histological investigation. It would allow for identification of a disease, which is uncommon in dermatology practice.</p></abstract><trans-abstract xml:lang="ru"><p>Гистиоцитоз из клеток Лангерганса в основном диагностируется у детей, его манифестация во взрослом возрасте встречается довольно редко. Высыпания на коже могут носить неспецифический характер и имитировать ряд дерматозов. Вследствие этого клиническая диагностика затруднительна, пациенты, как правило, в течение нескольких лет ошибочно наблюдаются у дерматолога с разными диагнозами.</p> <p>В статье приводится наблюдение гистиоцитоза из клеток Лангерганса с поражением кожи у женщины 35 лет, которая 2 года наблюдалась с диагнозами пиодермии, себорейного дерматита, кандидоза складок. Учитывая клиническую картину заболевания и возраст начала заболевания, авторы предположили наличие семейной доброкачественной пузырчатки Хейли – Хейли либо фолликулярного дискератоза Дарье. Однако при гистологическом исследовании были выявлены признаки гистиоцитоза из клеток Лангерганса, которые подтвердились результатами иммуногистохимического исследования с антителами к лангерину, CD1a, протеину S-100. Для обследования и проведения специфической терапии больная была направлена к гематологу.</p> <p>При резистентных процессах, не отвечающих длительно на стандартную терапию, необходимо для уточнения диагноза проводить гистологическое исследование, позволяющее выявлять редко встречающиеся в практике дерматолога заболевания.</p></trans-abstract><kwd-group xml:lang="en"><kwd>histiocytosis</kwd><kwd>Langerhans cells</kwd><kwd>skin folds</kwd><kwd>seborrheic areas</kwd><kwd>langerin</kwd><kwd>CD1a</kwd><kwd>protein S-100</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>гистиоцитоз</kwd><kwd>клетки Лангерганса</kwd><kwd>кожные складки</kwd><kwd>себорейные зоны</kwd><kwd>лангерин</kwd><kwd>CD1a</kwd><kwd>протеин S-100</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Kobayashi M, Tojo A. Langerhans cell histiocytosis in adults: Advances in pathophysiology and treatment. 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