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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">473</article-id><article-id pub-id-type="doi">10.17650/1818-8346-2021-16-2-40-47</article-id><article-categories><subj-group subj-group-type="toc-heading"><subject>ТРУДНОСТИ ДИАГНОСТИКИ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Difficulties of anemia diagnosis in patients with B-cell chronic lymphocytic leukemia</article-title><trans-title-group xml:lang="ru"><trans-title>Сложности диагностики анемий у пациентов с В-клеточным хроническим лимфоцитарным лейкозом</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1571-3161</contrib-id><name-alternatives><name xml:lang="en"><surname>Piskunova</surname><given-names>I. S.</given-names></name><name xml:lang="ru"><surname>Пискунова</surname><given-names>И. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Inga Samvelovna Piskunova</p><p>4 Novyy Zykovskiy Proezd, Moscow 125167</p></bio><bio xml:lang="ru"><p>Инга Самвеловна Пискунова</p><p>25167 Москва, Новый Зыковский проезд, 4</p></bio><email>piskunova.i@blood.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9591-8508</contrib-id><name-alternatives><name xml:lang="en"><surname>Moiseeva</surname><given-names>T. N.</given-names></name><name xml:lang="ru"><surname>Моисеева</surname><given-names>Т.Н. Т.Н.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>4 Novyy Zykovskiy Proezd, Moscow 125167</p></bio><bio xml:lang="ru"><p>125167 Москва, Новый Зыковский проезд, 4</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6702-9575</contrib-id><name-alternatives><name xml:lang="en"><surname>Al-Radi</surname><given-names>L. S.</given-names></name><name xml:lang="ru"><surname>Аль-Ради</surname><given-names>Л. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>4 Novyy Zykovskiy Proezd, Moscow 125167</p></bio><bio xml:lang="ru"><p>25167 Москва, Новый Зыковский проезд, 4</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5396-2113</contrib-id><name-alternatives><name xml:lang="en"><surname>Plastinina</surname><given-names>L. V.</given-names></name><name xml:lang="ru"><surname>Пластинина</surname><given-names>Л. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>4 Novyy Zykovskiy Proezd, Moscow 125167</p></bio><bio xml:lang="ru"><p>125167 Москва, Новый Зыковский проезд, 4</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3906-9171</contrib-id><name-alternatives><name xml:lang="en"><surname>Goryacheva</surname><given-names>S. R.</given-names></name><name xml:lang="ru"><surname>Горячева</surname><given-names>С. Р.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>4 Novyy Zykovskiy Proezd, Moscow 125167</p></bio><bio xml:lang="ru"><p>125167 Москва, Новый Зыковский проезд, 4</p></bio><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">National Medical Research Center for Hematology, Ministry of Health of Russia</institution></aff><aff><institution xml:lang="ru">ФГБУ «Национальный медицинский исследовательский центр гематологии» Минздрава России</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2021-06-07" publication-format="electronic"><day>07</day><month>06</month><year>2021</year></pub-date><volume>16</volume><issue>2</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>40</fpage><lpage>47</lpage><history><date date-type="received" iso-8601-date="2021-06-04"><day>04</day><month>06</month><year>2021</year></date><date date-type="accepted" iso-8601-date="2021-06-04"><day>04</day><month>06</month><year>2021</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/473">https://oncohematology.abvpress.ru/ongm/article/view/473</self-uri><abstract xml:lang="en"><p>Cytopenia commonly occurs in case of chronic lymphocytic leukemia. It can either precede the diagnosis of chronic lymphocytic leukemia or appear at any time during the disease. Autoimmune hemolytic anemia, immune thrombocytopenia, and partial red cell aplasia are most often found among cytopenias in chronic lymphocytic leukemia. At the same time, the development of cytopenia may be associated with the displacement of normal hematopoiesis cells by tumor lymphocytes. It is very important to accurately diagnose and identify the cause of cytopenia in chronic lymphocytic leukemia, since the prognosis and therapy differ significantly.</p></abstract><trans-abstract xml:lang="ru"><p>При хроническом лимфоцитарном лейкозе цитопении встречаются достаточно часто и могут как предшествовать диагностике хронического лимфоцитарного лейкоза, так и возникать в любое время в течение заболевания. Чаще всего среди цитопений при хроническом лимфоцитарном лейкозе встречаются аутоиммунная гемолитическая анемия, иммунная тромбоцитопения, парциальная красноклеточная аплазия. В то же время развитие цитопении может быть связано с вытеснением элементов нормального гемопоэза опухолевыми лимфоцитами. Очень важно точно установить причину цитопении при хроническом лимфоцитарном лейкозе, так как прогноз и терапия существенно отличаются.</p></trans-abstract><kwd-group xml:lang="en"><kwd>chronic lymphocytic leukemia</kwd><kwd>autoimmune hemolytic anemia</kwd><kwd>partial red cell bone marrow aplasia</kwd><kwd>immune thrombocytopenia</kwd><kwd>Fisher–Evans syndrome</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>хронический лимфоцитарный лейкоз</kwd><kwd>аутоиммунная гемолитическая анемия</kwd><kwd>парциальная красноклеточная аплазия костного мозга</kwd><kwd>иммунная тромбоцитопения</kwd><kwd>синдром Фишера–Эванса</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Truong P.T., Parhar T., Hart J. et al. 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