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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">372</article-id><article-id pub-id-type="doi">10.17650/1818-8346-2019-14-3-69-76</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>RARE HEMATOLOGICAL DISEASES: DIAGNOSTIC DIFFICULTIES</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>РЕДКИЕ ГЕМАТОЛОГИЧЕСКИЕ ЗАБОЛЕВАНИЯ: 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">Features of cytogenetic diagnosis of simultaneous chronic lymphocytic leukemia and myelodysplastic syndrome: clinical case report</article-title><trans-title-group xml:lang="ru"><trans-title>Особенности цитогенетической диагностики синхронно протекающих хронического лимфолейкоза и миелодиспластического синдрома: описание клинического случая</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3337-2487</contrib-id><name-alternatives><name xml:lang="en"><surname>Kislitsyna</surname><given-names>M. A.</given-names></name><name xml:lang="ru"><surname>Кислицына</surname><given-names>М. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>4 Novyy Zykovskiy Proezd, Moscow 125167</italic></p></bio><bio xml:lang="ru"><p><bold>Мария Анатольевна Кислицына </bold></p><p><italic>125167 Москва, Новый Зыковский проезд, 4 </italic></p></bio><email>makislitsyna@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1613-652X</contrib-id><name-alternatives><name xml:lang="en"><surname>Obukhova</surname><given-names>T. N.</given-names></name><name xml:lang="ru"><surname>Обухова</surname><given-names>Т. Н.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>4 Novyy Zykovskiy Proezd, Moscow 125167</italic></p></bio><bio xml:lang="ru"><p><italic>125167 Москва, Новый Зыковский проезд, 4 </italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0261-5941</contrib-id><name-alternatives><name xml:lang="en"><surname>Kokhno</surname><given-names>A. V.</given-names></name><name xml:lang="ru"><surname>Кохно</surname><given-names>А. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>4 Novyy Zykovskiy Proezd, Moscow 125167</italic></p></bio><bio xml:lang="ru"><p><italic>125167 Москва, Новый Зыковский проезд, 4 </italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2117-8775</contrib-id><name-alternatives><name xml:lang="en"><surname>Grebenyuk</surname><given-names>L. A.</given-names></name><name xml:lang="ru"><surname>Гребенюк</surname><given-names>Л. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>4 Novyy Zykovskiy Proezd, Moscow 125167</italic></p></bio><bio xml:lang="ru"><p><italic>125167 Москва, Новый Зыковский проезд, 4 </italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4400-4711</contrib-id><name-alternatives><name xml:lang="en"><surname>Luchkin</surname><given-names>A. V.</given-names></name><name xml:lang="ru"><surname>Лучкин</surname><given-names>А. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>4 Novyy Zykovskiy Proezd, Moscow 125167</italic></p></bio><bio xml:lang="ru"><p><italic>125167 Москва, Новый Зыковский проезд, 4 </italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kuzmina</surname><given-names>L. A.</given-names></name><name xml:lang="ru"><surname>Кузьмина</surname><given-names>Л. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>4 Novyy Zykovskiy Proezd, Moscow 125167</italic></p></bio><bio xml:lang="ru"><p><italic>125167 Москва, Новый Зыковский проезд, 4 </italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9877-0796</contrib-id><name-alternatives><name xml:lang="en"><surname>Dvirnyk</surname><given-names>V. N.</given-names></name><name xml:lang="ru"><surname>Двирнык</surname><given-names>В. Н.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>4 Novyy Zykovskiy Proezd, Moscow 125167</italic></p></bio><bio xml:lang="ru"><p><italic>125167 Москва, Новый Зыковский проезд, 4 </italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1082-8659</contrib-id><name-alternatives><name xml:lang="en"><surname>Kovrigina</surname><given-names>A. M.</given-names></name><name xml:lang="ru"><surname>Ковригина</surname><given-names>А. М.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>4 Novyy Zykovskiy Proezd, Moscow 125167</italic></p></bio><bio xml:lang="ru"><p><italic>125167 Москва, Новый Зыковский проезд, 4 </italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8490-6066</contrib-id><name-alternatives><name xml:lang="en"><surname>Galtseva</surname><given-names>I. V.</given-names></name><name xml:lang="ru"><surname>Гальцева</surname><given-names>И. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>4 Novyy Zykovskiy Proezd, Moscow 125167</italic></p></bio><bio xml:lang="ru"><p><italic>125167 Москва, Новый Зыковский проезд, 4 </italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6253-3334</contrib-id><name-alternatives><name xml:lang="en"><surname>Biderman</surname><given-names>B. V.</given-names></name><name xml:lang="ru"><surname>Бидерман</surname><given-names>Б. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>4 Novyy Zykovskiy Proezd, Moscow 125167</italic></p></bio><bio xml:lang="ru"><p><italic>125167 Москва, Новый Зыковский проезд, 4 </italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Troitskaya</surname><given-names>V. V.</given-names></name><name xml:lang="ru"><surname>Троицкая</surname><given-names>В. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>4 Novyy Zykovskiy Proezd, Moscow 125167</italic></p></bio><bio xml:lang="ru"><p><italic>125167 Москва, Новый Зыковский проезд, 4 </italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6177-3566</contrib-id><name-alternatives><name xml:lang="en"><surname>Parovichnikova</surname><given-names>E. N.</given-names></name><name xml:lang="ru"><surname>Паровичникова</surname><given-names>Е. Н.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>4 Novyy Zykovskiy Proezd, Moscow 125167</italic></p></bio><bio xml:lang="ru"><p><italic>125167 Москва, Новый Зыковский проезд, 4 </italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">National 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="2019-10-20" publication-format="electronic"><day>20</day><month>10</month><year>2019</year></pub-date><volume>14</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>69</fpage><lpage>76</lpage><history><date date-type="received" iso-8601-date="2019-10-20"><day>20</day><month>10</month><year>2019</year></date><date date-type="accepted" iso-8601-date="2019-10-20"><day>20</day><month>10</month><year>2019</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/372">https://oncohematology.abvpress.ru/ongm/article/view/372</self-uri><abstract xml:lang="en"><p>In chronic lymphocytic leukemia, the risk of second tumors including hematological malignancies, with which the use of purine nucleosides and alkylating agents in treatment of chronic lymphocytic leukemia is most often associated, is significantly increased. Concurrent detection of this disease and various hematological tumors is a rare occurrence in hematological practice. Use of cytogenetic method or analysis allows to differentiate between 2 tumors and confirm differences in genetic abnormalities in different clones and on different levels of cell differentiation. This article presents a clinical case of simultaneous chronic lymphocytic leukemia and myelodysplastic syndrome with 2 clones with different cytogenetic abnormalities: partial trisomy of chromosome 12 and deletion of the long arm of chromosome 5 formed at different levels of cell differentiation.</p></abstract><trans-abstract xml:lang="ru"><p>При хроническом лимфолейкозе значительно увеличен риск развития вторых опухолей, в том числе опухолевых заболеваний системы крови, с которыми чаще всего связывают применение аналогов пуриновых нуклеозидов и алкилирующих препаратов в терапии хронического лимфолейкоза. Сочетанное выявление данного заболевания и различных гематологических опухолей – редкое событие в гематологической практике. Применение цитогенетического метода исследования позволяет не только дифференцировать 2 опухоли, но и подтверждать различие генетических нарушений в разных клонах и на разных уровнях дифференцировки клеток. В настоящей статье представлен клинический случай синхронного течения хронического лимфолейкоза и миелодиспластического синдрома с 2 клонами с различными цитогенетическими аномалиями – частичной трисомией хромосомы 12 и делецией длинного плеча хромосомы 5, сформированными на разных уровнях дифференцировки клеток.</p></trans-abstract><kwd-group xml:lang="en"><kwd>chronic lymphocytic leukemia</kwd><kwd>myelodysplactic syndrome</kwd><kwd>cytogenetic analysis</kwd><kwd>deletion 5q</kwd><kwd>partial trisomy 12</kwd><kwd>concurrent neoplasm</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>хронический лимфолейкоз</kwd><kwd>миелодиспластический синдром</kwd><kwd>цитогенетическое исследование</kwd><kwd>делеция 5q</kwd><kwd>частичная трисомия 12</kwd><kwd>синхронные опухоли</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>McKenna D.B., Stockton D., Brewster D.H., Doherty V.R. 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