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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">309</article-id><article-id pub-id-type="doi">10.17650/1818-8346-2018-13-3-76-82</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>DIFFICULT DIAGNOSIS</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ТРУДНЫЙ ДИАГНОЗ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Rare cases of laboratory tests discrepancies in diagnostics of pediatric Burkitt lymphoma/leukemia</article-title><trans-title-group xml:lang="ru"><trans-title>Редкие случаи расхождения лабораторных признаков при диагностике лимфомы Беркитта у детей</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4317-2094</contrib-id><name-alternatives><name xml:lang="en"><surname>Demina</surname><given-names>I. A.</given-names></name><name xml:lang="ru"><surname>Демина</surname><given-names>И. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>1 Samory Mashela St., Moscow 117997.</p></bio><bio xml:lang="ru"><p>117997 Москва, ул. Саморы Машела, 1.</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2685-674X</contrib-id><name-alternatives><name xml:lang="en"><surname>Illarionova1</surname><given-names>O. I.</given-names></name><name xml:lang="ru"><surname>Илларионова</surname><given-names>О. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>1 Samory Mashela St., Moscow 117997.</p></bio><bio xml:lang="ru"><p>117997 Москва, ул. Саморы Машела, 1.</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9329-1828</contrib-id><name-alternatives><name xml:lang="en"><surname>Verzhbitskaya</surname><given-names>T. Yu.</given-names></name><name xml:lang="ru"><surname>Вержбицкая</surname><given-names>Т. Ю.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>32 Serafimy Deryabinoy St., Ekaterinburg 620149.</p><p>22a Karla Marksa St., Ekaterinburg 620026.</p></bio><bio xml:lang="ru"><p>620149 Екатеринбург, ул. Серафимы Дерябиной, 32.</p><p>620026 Екатеринбург, ул. Карла Маркса, 22а.</p></bio><xref ref-type="aff" rid="aff2"/><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9881-6221</contrib-id><name-alternatives><name xml:lang="en"><surname>Tsaur</surname><given-names>G. A.</given-names></name><name xml:lang="ru"><surname>Цаур</surname><given-names>Г. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>32 Serafimy Deryabinoy St., Ekaterinburg 620149.</p><p>22a Karla Marksa St., Ekaterinburg 620026.</p></bio><bio xml:lang="ru"><p>620149 Екатеринбург, ул. Серафимы Дерябиной, 32.</p><p>620026 Екатеринбург, ул. Карла Маркса, 22а.</p></bio><xref ref-type="aff" rid="aff2"/><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Rusanova</surname><given-names>E. B.</given-names></name><name xml:lang="ru"><surname>Русанова</surname><given-names>Е. Б.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>6-8 L’va Tolstogo St., Saint Petersburg 197022.</p></bio><bio xml:lang="ru"><p>197022 Санкт-Петербург, ул. Льва Толстого, 6-8.</p></bio><xref ref-type="aff" rid="aff4"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Gorchakova</surname><given-names>M. V.</given-names></name><name xml:lang="ru"><surname>Горчакова</surname><given-names>М. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>6-8 L’va Tolstogo St., Saint Petersburg 197022.</p></bio><bio xml:lang="ru"><p>197022 Санкт-Петербург, ул. Льва Толстого, 6-8.</p></bio><xref ref-type="aff" rid="aff4"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Zueva</surname><given-names>E. E.</given-names></name><name xml:lang="ru"><surname>Зуева</surname><given-names>Е. Е.</given-names></name></name-alternatives><address><country country="IL">Israel</country></address><bio xml:lang="en"><p>6-8 L’va Tolstogo St., Saint Petersburg 197022.</p><p>Ariel 40700, Israel.</p></bio><bio xml:lang="ru"><p>197022 Санкт-Петербург, ул. Льва Толстого, 6-8.</p><p>Израиль, 40700 Ариэль.</p></bio><xref ref-type="aff" rid="aff5"/><xref ref-type="aff" rid="aff6"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Belogurova</surname><given-names>M. B.</given-names></name><name xml:lang="ru"><surname>Белогурова</surname><given-names>М. Б.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>68a Leningradskaya St., Pesochnyi, Saint Petersburg 197758.</p></bio><bio xml:lang="ru"><p>197758 Санкт-Петербург, пос. Песочный, ул. Ленинградская, 68а, лит. А.</p></bio><xref ref-type="aff" rid="aff7"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Uleiskaya</surname><given-names>G. I.</given-names></name><name xml:lang="ru"><surname>Улейская</surname><given-names>Г. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>3 Dynamo Prospekt, Saint Petersburg 197110.</p></bio><bio xml:lang="ru"><p>197110 Санкт-Петербург, проспект Динамо, 3.</p></bio><xref ref-type="aff" rid="aff8"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Shchekina</surname><given-names>L. A.</given-names></name><name xml:lang="ru"><surname>Щекина</surname><given-names>Л. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>3 Dynamo Prospekt, Saint Petersburg 197110.</p></bio><bio xml:lang="ru"><p>197110 Санкт-Петербург, проспект Динамо, 3.</p></bio><xref ref-type="aff" rid="aff8"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kazakova</surname><given-names>A. N.</given-names></name><name xml:lang="ru"><surname>Казакова</surname><given-names>А. Н.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>1 Samory Mashela St., Moscow 117997.</p></bio><bio xml:lang="ru"><p>117997 Москва, ул. Саморы Машела, 1.</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9634-5828</contrib-id><name-alternatives><name xml:lang="en"><surname>Zerkalenkova</surname><given-names>E. A.</given-names></name><name xml:lang="ru"><surname>Зеркаленкова</surname><given-names>Е. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>1 Samory Mashela St., Moscow 117997.</p></bio><bio xml:lang="ru"><p>117997 Москва, ул. Саморы Машела, 1.</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2352-7716</contrib-id><name-alternatives><name xml:lang="en"><surname>Olshanskaya</surname><given-names>Yu. V.</given-names></name><name xml:lang="ru"><surname>Ольшанская</surname><given-names>Ю. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>1 Samory Mashela St., Moscow 117997.</p></bio><bio xml:lang="ru"><p>117997 Москва, ул. Саморы Машела, 1.</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Abugova</surname><given-names>Yu. G.</given-names></name><name xml:lang="ru"><surname>Абугова</surname><given-names>Ю. Г.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>1 Samory Mashela St., Moscow 117997.</p></bio><bio xml:lang="ru"><p>117997 Москва, ул. Саморы Машела, 1.</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1885-3912</contrib-id><name-alternatives><name xml:lang="en"><surname>Fechina</surname><given-names>l. G.</given-names></name><name xml:lang="ru"><surname>Фечина</surname><given-names>Л. Г.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>32 Serafimy Deryabinoy St., Ekaterinburg 620149.</p><p>22a Karla Marksa St., Ekaterinburg 620026.</p></bio><bio xml:lang="ru"><p>620149 Екатеринбург, ул. Серафимы Дерябиной, 32.</p><p>620026 Екатеринбург, ул. Карла Маркса, 22а.</p></bio><xref ref-type="aff" rid="aff9"/><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4779-1896</contrib-id><name-alternatives><name xml:lang="en"><surname>Miakova</surname><given-names>N. V.</given-names></name><name xml:lang="ru"><surname>Мякова</surname><given-names>Н. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>1 Samory Mashela St., Moscow 117997.</p></bio><bio xml:lang="ru"><p>117997 Москва, ул. Саморы Машела, 1.</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Samochatova</surname><given-names>E. V.</given-names></name><name xml:lang="ru"><surname>Самочатова</surname><given-names>Е. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>1 Samory Mashela St., Moscow 117997.</p></bio><bio xml:lang="ru"><p>117997 Москва, ул. Саморы Машела, 1.</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0016-6698</contrib-id><name-alternatives><name xml:lang="en"><surname>Maschan</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Масчан</surname><given-names>А. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>1 Samory Mashela St., Moscow 117997.</p></bio><bio xml:lang="ru"><p>117997 Москва, ул. Саморы Машела, 1.</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0889-6986</contrib-id><name-alternatives><name xml:lang="en"><surname>Popov</surname><given-names>A. M.</given-names></name><name xml:lang="ru"><surname>Попов</surname><given-names>А. М.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>1 Samory Mashela St., Moscow 117997.</p></bio><bio xml:lang="ru"><p>Александр Михайлович Попов.</p><p>117997 Москва, ул. Саморы Машела, 1.</p></bio><email>uralcytometry@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Ministry of Health of Russia.</institution></aff><aff><institution xml:lang="ru">ФГБУ «Национальный медицинский исследовательский центр детской гематологии, онкологии и иммунологии имени Дмитрия Рогачева» Минздрава России.</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Sverdlovsk Regional Clinical Children’s Hospital No 1</institution></aff><aff><institution xml:lang="ru">ГБУЗ СО «Областная детская клиническая больница № 1»</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Research Institute of Medical Cell Technologies.</institution></aff><aff><institution xml:lang="ru">ГАУЗ СО «Институт медицинских клеточных технологий».</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">I.P. Pavlov First Saint Petersburg State Medical University.</institution></aff><aff><institution xml:lang="ru">ГБОУ ВПО «Первый Санкт-Петербургский государственный медицинский университет имени академика И.П. Павлова» Минздрава России.</institution></aff></aff-alternatives><aff-alternatives id="aff5"><aff><institution xml:lang="en">I.P. Pavlov First Saint Petersburg State Medical University</institution></aff><aff><institution xml:lang="ru">ГБОУ ВПО «Первый Санкт-Петербургский государственный медицинский университет имени академика И.П. Павлова» Минздрава России</institution></aff></aff-alternatives><aff-alternatives id="aff6"><aff><institution xml:lang="en">Ariel University, Faculty of Natural Sciences, Department of Molecular Biology.</institution></aff><aff><institution xml:lang="ru">Ариэльский университет, факультет естественных наук, кафедра молекулярной биологии.</institution></aff></aff-alternatives><aff-alternatives id="aff7"><aff><institution xml:lang="en">St. Petersburg Clinical Scientific and Practical Center of Specialized Medical Assistance (Oncological).</institution></aff><aff><institution xml:lang="ru">ГБУЗ «Санкт-Петербургский клинический научно-практический центр специализированных видов медицинской помощи (онкологический)».</institution></aff></aff-alternatives><aff-alternatives id="aff8"><aff><institution xml:lang="en">City Clinical Hospital No. 31.</institution></aff><aff><institution xml:lang="ru">ГБУЗ «Городская клиническая больница № 31».</institution></aff></aff-alternatives><aff-alternatives id="aff9"><aff><institution xml:lang="en">Sverdlovsk Regional Clinical Children’s Hospital No 1.</institution></aff><aff><institution xml:lang="ru">ГБУЗ СО «Областная детская клиническая больница № 1»</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2018-10-27" publication-format="electronic"><day>27</day><month>10</month><year>2018</year></pub-date><volume>13</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>76</fpage><lpage>82</lpage><history><date date-type="received" iso-8601-date="2018-10-27"><day>27</day><month>10</month><year>2018</year></date><date date-type="accepted" iso-8601-date="2018-10-27"><day>27</day><month>10</month><year>2018</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/309">https://oncohematology.abvpress.ru/ongm/article/view/309</self-uri><abstract xml:lang="en"><p><bold>Introduction.</bold> The main features of bone marrow blasts cells in Burkitt lymphoma/leukemia (BL) are L3 morphology, mature immunophenotype of blasts with surface IgM expression, and presence of typical MYC gene rearrangements.</p><p><bold>The aim of the study</bold> was to show discrepancy examples in laboratory signs of BL.</p><p><bold>Patients and methods.</bold> 10 patients (8 boys and 2 girls) aged 1 to 18 years were included in the present study. The inclusion criterion was the identification of discrepancies between flow cytometric, morphological and cytogenetic data.</p><p><bold>Results.</bold> In 2 cases there were no rearrangements of the MYC gene. In 2 patients, the L2 morphological variant went against the presence of typical MYC gene rearrangements. In one case, undifferentiated blasts cells were described by morphology together with presence of surface IgM, and atypical genetics. In 8 patients, there was no expression of surface IgM. Of these, patients with absence of cytomorphological data cytometric and genetic data were controversial.</p><p><bold>Сonclusion.</bold> The cases presented in this study and the cases described in the literature demonstrate the importance of an attentive and comprehensive approach in evaluating the results of laboratory tests in the diagnosis of BL.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Введение.</bold> Основными критериями постановки диагноза «лимфома Беркитта» (ЛБ) являются определение зрелого иммунофенотипа бластных клеток c экспрессией поверхностного IgM, выявление L3 морфологического варианта и наличие характерных перестроек гена c-myc.</p><p><bold>Цель исследования</bold> – описание вариантов расхождения лабораторных признаков при диагностике ЛБ.</p><p><bold>Материалы и методы.</bold> В настоящее исследование было включено 10 пациентов (8 мальчиков и 2 девочки) в возрасте от 1 до 18 лет. Основным критерием включения послужило выявление противоречий между данными иммунофенотипирования (ИФТ), морфологического и цитогенетического анализов.</p><p><bold>Результаты.</bold> Нами описаны 2 случая с отсутствием перестроек гена c-myc. У 2 пациентов определялся L2 вариант морфологии, который противоречил наличию типичных для ЛБ перестроек гена c-myc. В 1 случае были описаны недифференцируемые бласты при наличии поверхностного IgM и отсутствии перестроек гена c-myc. У 8 пациентов отсутствовала экспрессия поверхностного IgM. Из них у 2 пациентов противоречивыми были данные одновременно ИФТ и морфологии, и основой для постановки диагноза стало обнаружение типичной транслокации t(8;14)(q24;q32).</p><p><bold>Заключение.</bold> Случаи, представленные в настоящей статье, и случаи, описанные в литературе, демонстрируют важность внимательного и комплексного подхода при оценке результатов лабораторных исследований в диагностике ЛБ.</p></trans-abstract><kwd-group xml:lang="en"><kwd>Сonclusion. The cases presented in this study and the cases described in the literature demonstrate the importance of an attentive and comprehensive approach in evaluating the results of laboratory tests in the diagnosis of BL.</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>лимфома Беркитта</kwd><kwd>бластные клетки в костном мозге</kwd><kwd>лабораторная диагностика</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Burkitt D. 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