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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">Oncohematology</journal-id><journal-title-group><journal-title xml:lang="en">Oncohematology</journal-title><trans-title-group xml:lang="ru"><trans-title>Онкогематология</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1818-8346</issn><issn publication-format="electronic">2413-4023</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">10.17650/1818-8346-2022-17-1-10-25</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>HEMATOLOGIC MALIGNANCIES: TREATMENT</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ЛЕЧЕНИЕ ГЕМОБЛАСТОЗОВ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Histiocytic neoplasms: modern aspects of pathogenesis, classification, diagnosis and treatment</article-title><trans-title-group xml:lang="ru"><trans-title>Гистиоцитарные опухоли: современные аспекты патогенеза, классификации, диагностики и лечения</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0050-0721</contrib-id><name-alternatives><name xml:lang="en"><surname>Gurieva</surname><given-names>O. D.</given-names></name><name xml:lang="ru"><surname>Гурьева</surname><given-names>О. Д.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>24 Kashirskoe Shosse, Moscow 115478</italic></p></bio><bio xml:lang="ru"><p><italic>115478 Москва, Каширское шоссе, 24 </italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1469-2365</contrib-id><name-alternatives><name xml:lang="en"><surname>Valiev</surname><given-names>T. T.</given-names></name><name xml:lang="ru"><surname>Валиев</surname><given-names>Т. Т.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><bold>Timur T. Valiev </bold></p><p><italic>24 Kashirskoe Shosse, Moscow 115478</italic></p></bio><bio xml:lang="ru"><p><bold>Тимур Теймуразович Валиев</bold></p><p><italic>115478 Москва, Каширское шоссе, 24 </italic></p></bio><email>timurvaliev@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6300-0062</contrib-id><name-alternatives><name xml:lang="en"><surname>Pavlovskaya</surname><given-names>A. I.</given-names></name><name xml:lang="ru"><surname>Павловская</surname><given-names>А. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>24 Kashirskoe Shosse, Moscow 115478</italic></p></bio><bio xml:lang="ru"><p><italic>115478 Москва, Каширское шоссе, 24 </italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">N.N. Blokhin National Medical Research Center of Oncology, Ministry of Health of Russia</institution></aff><aff><institution xml:lang="ru">ФГБУ «Национальный медицинский исследовательский центр онкологии им. Н.Н. Блохина» Минздрава России</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2022-01-29" publication-format="electronic"><day>29</day><month>01</month><year>2022</year></pub-date><volume>17</volume><issue>1</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>10</fpage><lpage>25</lpage><history><date date-type="received" iso-8601-date="2022-01-28"><day>28</day><month>01</month><year>2022</year></date><date date-type="accepted" iso-8601-date="2022-01-28"><day>28</day><month>01</month><year>2022</year></date></history><permissions><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/></permissions><self-uri xlink:href="https://oncohematology.abvpress.ru/ongm/article/view/515">https://oncohematology.abvpress.ru/ongm/article/view/515</self-uri><abstract xml:lang="en"><p>Histiocytic cell tumors present as a difficult group of diseases in terms of differential diagnosis due to their rare frequency, heterogeneous clinical manifestations and ambiguous clinical course. Considering MAPK-signaling pathway mutations role (including BRAFV600E) in the pathogenesis of histiocytic cell tumors the importance of genetic studies in the diagnosis and choice of therapeutic strategy in these diseases increases. In the current issue modern classifications of histiocytic cell tumors, morphological and immunophenotypic features of histiocytic and dendritic cells, and the role of recurrent somatic mutations of the MAPK signaling pathway in the pathological histiocytic proliferation are presented. Particular attention is given to Langerhans cell histiocytosis, Erdheim–Chester disease and juvenile xanthogranuloma. Clinical and diagnostic characteristics of these diseases and therapeutic approaches are presented.</p></abstract><trans-abstract xml:lang="ru"><p>Гистиоцитарные опухоли представляют собой сложную в дифференциально-диагностическом плане группу заболеваний, что обусловлено редкой встречаемостью, пестротой клинических проявлений, неоднозначным клиническим течением. С учетом определения роли мутаций сигнального пути MAPK (в том числе BRAFV600E) в патогенезе гистиоцитарных опухолей возрастает роль генетических исследований в диагностике и выборе тактики терапии при данных заболеваниях. В настоящей статье представлены современные классификации гистиоцитарных опухолей, обозначены морфоиммунологические особенности гистиоцитарных и дендритных клеток, роль рекуррентных соматических мутаций сигнального пути MAPK в патологической гистиоцитарной пролиферации. Особое внимание уделено гистиоцитозу из клеток Лангерганса, болезни Эрдгейма–Честера и ювенильной ксантогранулеме. Приведены клинико-диагностические особенности данных заболеваний, освещены терапевтические подходы.</p></trans-abstract><kwd-group xml:lang="en"><kwd>histiocytic neoplasm</kwd><kwd>Langerhans cell histiocytosis</kwd><kwd>Erdheim–Chester disease</kwd><kwd>juvenile xanthogranuloma</kwd><kwd>MAPK signaling pathway</kwd><kwd>BRAFV600E mutation</kwd><kwd>diagnosis</kwd><kwd>treatment</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>гистиоцитарная опухоль</kwd><kwd>гистиоцитоз из клеток Лангерганса</kwd><kwd>болезнь Эрдгейма–Честера</kwd><kwd>ювенильная ксантогранулема</kwd><kwd>сигнальный путь MAPK</kwd><kwd>мутация BRAFV600E</kwd><kwd>диагностика</kwd><kwd>лечение</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Stålemark H., Laurencikas E., Karis J. et al. Incidence of Langerhans cell histiocytosis in children: a populationbased study. Pediatr Blood Cancer 2008;51(1):76–81. 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