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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">542</article-id><article-id pub-id-type="doi">10.24287/1726-1708-2021-20-3-46-50</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>ORIGINAL ARTICLES</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ОРИГИНАЛЬНЫЕ СТАТЬИ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Incidence of venous thromboembolism in children with primary lymphomas</article-title><trans-title-group xml:lang="ru"><trans-title>Частота встречаемости венозных тромбозов у детей и подростков с первично диагностированными лимфомами</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2801-7421</contrib-id><name-alternatives><name xml:lang="en"><surname>Evstratov</surname><given-names>D. A.</given-names></name><name xml:lang="ru"><surname>Евстратов</surname><given-names>Д. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><bold>Dmitry A. Evstratov</bold>, MD, Hematologist in oncohematology department</p><p>1 Samory Mashela St., Moscow 117997 </p></bio><bio xml:lang="ru"><p><bold>Евстратов Дмитрий Андреевич</bold>, врач-гематолог отделения онкогематологии </p><p>117997, Москва, ул. Саморы Машела, 1</p></bio><email>Evstratov.D.A@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3247-8688</contrib-id><name-alternatives><name xml:lang="en"><surname>Anderzhanova</surname><given-names>L. H.</given-names></name><name xml:lang="ru"><surname>Андержанова</surname><given-names>Л. Х.</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/0000-0002-2057-2036</contrib-id><name-alternatives><name xml:lang="en"><surname>Pshonkin</surname><given-names>A. V.</given-names></name><name xml:lang="ru"><surname>Пшонкин</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/0000-0001-5201-6475</contrib-id><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>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/0000-0002-4779-1896</contrib-id><name-alternatives><name xml:lang="en"><surname>Myakova</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>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/0000-0003-4384-6754</contrib-id><name-alternatives><name xml:lang="en"><surname>Zharkov</surname><given-names>P. A.</given-names></name><name xml:lang="ru"><surname>Жарков</surname><given-names>П. 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/0000-0003-2294-0821</contrib-id><name-alternatives><name xml:lang="en"><surname>Fominykh</surname><given-names>V. V.</given-names></name><name xml:lang="ru"><surname>Фоминых</surname><given-names>В. 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/0000-0003-2677-367X</contrib-id><name-alternatives><name xml:lang="en"><surname>Ershov</surname><given-names>N. M.</given-names></name><name xml:lang="ru"><surname>Ершов</surname><given-names>Н. М.</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/0000-0002-8725-7532</contrib-id><name-alternatives><name xml:lang="en"><surname>Dyakonova</surname><given-names>Yu. Yu.</given-names></name><name xml:lang="ru"><surname>Дьяконова</surname><given-names>Ю. Ю.</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/0000-0001-7959-3512</contrib-id><name-alternatives><name xml:lang="en"><surname>Vavilova</surname><given-names>L. A.</given-names></name><name xml:lang="ru"><surname>Вавилова</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">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="2021-10-08" publication-format="electronic"><day>08</day><month>10</month><year>2021</year></pub-date><volume>20</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>46</fpage><lpage>50</lpage><history><date date-type="received" iso-8601-date="2021-10-07"><day>07</day><month>10</month><year>2021</year></date><date date-type="accepted" iso-8601-date="2021-10-07"><day>07</day><month>10</month><year>2021</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2021, «D. Rogachev NMRCPHOI»</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2021, ФГБУ «НМИЦ ДГОИ им. Дмитрия Рогачева» Минздрава России</copyright-statement><copyright-year>2021</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/542">https://hemoncim.com/jour/article/view/542</self-uri><abstract xml:lang="en"><p>Cancer increases the risk of venous thromboembolism (VTE) in adults and children. The aim of our study was to evaluate the incidence of VTE in children and adolescents with lymphomas. The study was approved by the Independent Ethics Committee of the Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology. A retrospective analysis based on medical data of 262 children and adolescents (0–18 years) with primary lymphomas (n = 262) who were treated in Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology since 01.01.2013 to 31.12.2019 had been performed. Such parameters as age and sex distribution of patients, the frequency, as well as the cumulative incidence of detection (CI) and differences in localization, the median time of detection of symptomatic (sVTE) and asymptomatic episodes of VT (aVTE), their relationship with central venous catheters (CVC) were analyzed. Statistical processing of the obtained data was carried out using the XLSTAT 2020 program (Addinsoft, France). The median age was 11,1 years (interquartile range (IQR) 6.5–15 years), the ratio of males to females was 2.2:1. There were 71 episodes of VTE in 65 patients (24.8%, 95% confidence interval (CI): 19.6–30). Among all episodes of VTE 31% were defined as sVTE at 400 day CI for sVTE was found to be 8.1% (95% CI: 5.4–12.2) and CI for aVTE – 18.7% (95% CI: 14.4–24.2). The median time to VTE episode was 38 days (IQR 16.5–91.5 days). There was a trend towards an earlier diagnosis of sVTE (median 23.5 days, IQR – 17–42 days) than aVTE (median 62 days, IQR 14–80 days), p = 0.075. VTE was CVC-related in 67.7 of all VTE cases. In one case, asymptomatic thrombosis of right atrium led to pulmonary embolism (PE). VTE is a frequent complication in children and adolescents with lymphomas. Most episodes of VTE were asymptomatic, one of which was the most likely cause of PE in the child. Further research is needed to find risk factors for VTE.</p></abstract><trans-abstract xml:lang="ru"><p>Наличие злокачественного новообразования повышает риск развития венозных тромбозов (ВТ) как у взрослых, так и у детей. Целью данной работы является определение частоты встречаемости ВТ у детей и подростков с лимфомами. Данное исследование одобрено независимым этическим комитетом и утверждено решением ученого совета НМИЦ ДГОИ им. Дмитрия Рогачева. В исследование были включены 262 пациента младше 18 лет с первично диагностированными лимфомами, получавшие терапию в ФГБУ «НМИЦ ДГОИ им. Дмитрия Рогачева» Минздрава России с 01.01.2013 по 31.12.2019. Анализировали особенности распределения пациентов по возрасту и полу, частоту, кумулятивную вероятность (КВ) выявления, а также различия в локализации, медиане времени выявления симптоматических (сВТ) и асимптоматических эпизодов (аВТ) ВТ, их связь с центральными венозными катетерами (ЦВК). Статистическая обработка полученных данных проводилась с помощью программы XLSTAT 2020 (Addinsoft, Франция). Медиана возраста составила 11,1 года (межквартильный размах (МКР) 6,5 года – 15 лет), распределение по полу (мальчики:девочки) – 2,2:1. У 65 (24,8%, 95% доверительный интервал (ДИ): 19,6–30) пациентов был диагностирован 71 эпизод ВТ. сВТ среди всех ВТ было 31%. КВ развития сВТ на 400-й день составила 8,1% (95% ДИ: 5,4–12,2), а аВТ – 18,7% (95% ДИ: 14,4–24,2). Медиана времени до диагностики ВТ составила 38 дней (МКР 16,5–91,5 дня). Отмечался тренд в отношении более ранней диагностики сВТ (медиана 23,5 дня, МКР – 17–42 дня), чем аВТ (медиана 62 дня, МКР 14–80 дней), р = 0,075. ВТ в 67,6% случаев были связаны с ЦВК. В 1 случае аВТ правого предсердия привел к тромбоэмболии легочных артерий (ТЭЛА). ВТ являются частым осложнением у детей и подростков с лимфомами. Большинство эпизодов ВТ являлись асимптоматическими, 1 из которых стал наиболее вероятной причиной ТЭЛА у ребенка. Необходимо проведение дальнейших исследований для поиска факторов риска развития ВТ.</p></trans-abstract><kwd-group xml:lang="en"><kwd>venous thromboembolism</kwd><kwd>children</kwd><kwd>adolescents</kwd><kwd>lymphoma</kwd><kwd>pulmonary embolism</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>венозный тромбоз</kwd><kwd>дети</kwd><kwd>подростки</kwd><kwd>лимфома</kwd><kwd>тромбоэмболия легочных артерий</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">1. Walker A.J., Grainge M.J., Card T.R., West J., Ranta S., Ludvigsson J.F. Venous thromboembolism in children with cancer - a population-based cohort study. Thromb Res 2014; 133 (3): 340–4.</mixed-citation><mixed-citation xml:lang="ru">Walker A.J., Grainge M.J., Card T.R., West J., Ranta S., Ludvigsson J.F. Venous thromboembolism in children with cancer - a population-based cohort study. 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