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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">Pediatric Hematology/Oncology and Immunopathology</journal-id><journal-title-group><journal-title xml:lang="en">Pediatric Hematology/Oncology and Immunopathology</journal-title><trans-title-group xml:lang="ru"><trans-title>Вопросы гематологии/онкологии и иммунопатологии в педиатрии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1726-1708</issn><issn publication-format="electronic">2414-9314</issn><publisher><publisher-name xml:lang="en">Fund Doctors, Innovations, Science for Children</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">794</article-id><article-id pub-id-type="doi">10.24287/1726-1708-2024-23-3-138-142</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>CLINICAL OBSERVATIONS</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></subject></subj-group></article-categories><title-group><article-title xml:lang="en">A rare case of metastatic involvement of the bone marrow in a patient with medulloblastoma</article-title><trans-title-group xml:lang="ru"><trans-title>Редкий случай метастатического поражения костного мозга у пациента с медуллобластомой</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6271-7435</contrib-id><name-alternatives><name xml:lang="en"><surname>Konyukhova</surname><given-names>T. V.</given-names></name><name xml:lang="ru"><surname>Конюхова</surname><given-names>Т. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Tatyana V. Konyukhova - MD in Clinical Laboratory Medicine at the Clinical and Diagnostic Laboratory.</p><p>1 Samory Mashela St., Moscow 117997</p></bio><bio xml:lang="ru"><p>Конюхова Татьяна Владимировна - врач клинической лабораторной диагностики клинико-диагностической лаборатории.</p><p>117997, Москва, ул. Саморы Машела, 1</p></bio><email>tkonuhova@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6296-4305</contrib-id><name-alternatives><name xml:lang="en"><surname>Vilesova</surname><given-names>I. G.</given-names></name><name xml:lang="ru"><surname>Вилесова</surname><given-names>И. Г.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Moscow</p></bio><bio xml:lang="ru"><p>Москва</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9846-2793</contrib-id><name-alternatives><name xml:lang="en"><surname>Salnikova</surname><given-names>E. A.</given-names></name><name xml:lang="ru"><surname>Сальникова</surname><given-names>Е. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Moscow</p></bio><bio xml:lang="ru"><p>Москва</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0628-1726</contrib-id><name-alternatives><name xml:lang="en"><surname>Artemov</surname><given-names>A. V.</given-names></name><name xml:lang="ru"><surname>Артемов</surname><given-names>А. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Moscow</p></bio><bio xml:lang="ru"><p>Москва</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8129-0545</contrib-id><name-alternatives><name xml:lang="en"><surname>Shcherbakov</surname><given-names>A. P.</given-names></name><name xml:lang="ru"><surname>Щербаков</surname><given-names>А. П.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Moscow</p></bio><bio xml:lang="ru"><p>Москва</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7750-5216</contrib-id><name-alternatives><name xml:lang="en"><surname>Papusha</surname><given-names>L. I.</given-names></name><name xml:lang="ru"><surname>Папуша</surname><given-names>Л. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Moscow</p></bio><bio xml:lang="ru"><p>Москва</p></bio><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">The Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology of Ministry of Healthcare of the Russian Federation</institution></aff><aff><institution xml:lang="ru">ФГБУ «Национальный медицинский исследовательский центр детской гематологии, онкологии и иммунологии им. Дмитрия Рогачева» Минздрава России</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2024-09-08" publication-format="electronic"><day>08</day><month>09</month><year>2024</year></pub-date><volume>23</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>138</fpage><lpage>142</lpage><history><date date-type="received" iso-8601-date="2023-12-21"><day>21</day><month>12</month><year>2023</year></date><date date-type="accepted" iso-8601-date="2024-04-08"><day>08</day><month>04</month><year>2024</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, «D. Rogachev NMRCPHOI»</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, ФГБУ «НМИЦ ДГОИ им. Дмитрия Рогачева» Минздрава России</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">«D. Rogachev NMRCPHOI»</copyright-holder><copyright-holder xml:lang="ru">ФГБУ «НМИЦ ДГОИ им. Дмитрия Рогачева» Минздрава России</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://hemoncim.com/jour/article/view/794">https://hemoncim.com/jour/article/view/794</self-uri><abstract xml:lang="en"><p>Extraneural metastasis from primary brain tumors is an extremely rare occurrence. The majority of such cases described in the literature are medulloblastoma relapses. In this article, we report a case of relapse in a patient with medulloblastoma with the metastatic involvement of the bone marrow two years after successful treatment for the primary tumor. The patient's parents gave consent to the use of their child's data, including photographs, for research purposes and in publications.</p></abstract><trans-abstract xml:lang="ru"><p>Экстраневральное метастазирование – крайне редкое проявление первичных опухолей головного мозга. Большая часть описанных в литературе случаев представлена рецидивами медуллобластомы. В данной статье описан случай рецидива у пациента с медуллобластомой с метастатическим поражением костного мозга через 2 года после успешного лечения первичной опухоли. Родители пациента дали согласие на использование информации, в том числе фотографий ребенка, в научных исследованиях и публикациях.</p></trans-abstract><kwd-group xml:lang="en"><kwd>medulloblastoma</kwd><kwd>extraneural metastases</kwd><kwd>tumor cells</kwd><kwd>bone marrow</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>медуллобластома</kwd><kwd>экстраневральные метастазы</kwd><kwd>опухолевые клетки</kwd><kwd>костный мозг</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Не указан</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">Menyhárt O, Győrffy B. Molecular stratifications, biomarker candidates and new therapeutic options in current medulloblastoma treatment approaches. Cancer Metastasis Rev. 2020 Mar; 39(1):211-233. DOI: 10.1007/s10555-020-09854-1. 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