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<article article-type="research-article" dtd-version="1.3" 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" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">nodgo</journal-id><journal-title-group><journal-title xml:lang="ru">Российский журнал детской гематологии и онкологии (РЖДГиО)</journal-title><trans-title-group xml:lang="en"><trans-title>Russian Journal of Pediatric Hematology and Oncology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2311-1267</issn><issn pub-type="epub">2413-5496</issn><publisher><publisher-name>LTD “Graphica”</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17650/2311-1267-2018-5-3-108-114</article-id><article-id custom-type="elpub" pub-id-type="custom">nodgo-413</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>КЛИНИЧЕСКИЕ НАБЛЮДЕНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CLINICAL CASES</subject></subj-group></article-categories><title-group><article-title>Трехростковая цитопения у ребенка с врожденной кавернозной трансформацией воротной вены</article-title><trans-title-group xml:lang="en"><trans-title>Three-stage cytopenia in a child with congenital cavernous transformation of the portal vein</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лохматова</surname><given-names>М. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Lokhmatova</surname><given-names>M. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Марина Евгеньевна Лохматова.</p><p>117997, Москва, ул. Саморы Машела, 1</p></bio><bio xml:lang="en"><p>1 Samory Mashela St., Moscow, 117997</p></bio><email xlink:type="simple">lokhmatova@rambler.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тайшихина</surname><given-names>И. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Taishikhina</surname><given-names>I. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>117997, Москва, ул. Саморы Машела, 1</p></bio><bio xml:lang="en"><p>1 Samory Mashela St., Moscow, 117997</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБУ «НМИЦ ДГОИ им. Дмитрия Рогачева» Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Ministry of Health of Russia</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2018</year></pub-date><pub-date pub-type="epub"><day>16</day><month>09</month><year>2018</year></pub-date><volume>5</volume><issue>3</issue><fpage>108</fpage><lpage>114</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Лохматова М.Е., Тайшихина И.О., 2018</copyright-statement><copyright-year>2018</copyright-year><copyright-holder xml:lang="ru">Лохматова М.Е., Тайшихина И.О.</copyright-holder><copyright-holder xml:lang="en">Lokhmatova M.E., Taishikhina I.O.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://journal.nodgo.org/jour/article/view/413">https://journal.nodgo.org/jour/article/view/413</self-uri><abstract><p>В статье представлен случай наблюдения за пациентом в возрасте 1 года 9 месяцев с изолированной тромбоцитопенией, с падением тромбоцитов до 98 тыс/мкл, прогрессировавшей в течение 1 года до трехростковой цитопении, явившейся следствием врожденной кавернозной трансформации воротной вены. Обсуждается дифференциальная диагностика цитопении у детей раннего возраста, которая является сложной клинической задачей. Дифференциальная диагностика может сопровождаться ошибками при постановке диагноза и, соответственно, выборе терапии. Настороженность клиницистов в отношении только гематологической патологии может привести к заблуждению. Отсутствие клинических проявлений и умеренные отклонения в гемограмме (гемоглобин – 98 г/л, эритроциты – 4,64 × 1012/л, тромбоциты – 98 × 109/л, лейкоциты – 5,0 × 109/л, абсолютное число нейтрофилов – 0,79 × 109/л) затрудняли диагностический поиск в данном случае.</p></abstract><trans-abstract xml:lang="en"><p>The article represents a case of observation the patient aged 1 year 9 months with an isolated thrombocytopenia with a drop in platelets to 98 thousand/μL, that had been progressed during 1 year to three-stage cytopenia, which was the result of a congenital cavernous transformation of the portal vein. The differential diagnosis of young children’s cytopenia is a complex clinical task, which can be followed by errors in the diagnosis and, accordingly, the choice of therapy. The care of clinicians regarding only hematological pathology can lead to the confusion. The absence of clinical manifestations and moderate deviations in the hemogram (Hb – 98 g/l, RBC– 4.64 × 1012/l, PLT – 98 × 109/l, WBC – 5.0  × 109/l, GR – 0.79  × 109/l) made the diagnostic search rather difficult in this case.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>цитопения</kwd><kwd>тромбоцитопения</kwd><kwd>гиперспленизм</kwd><kwd>внепеченочная портальная гипертензия</kwd></kwd-group><kwd-group xml:lang="en"><kwd>cytopenia</kwd><kwd>thrombocytopenia</kwd><kwd>hypersplenism</kwd><kwd>extrahepatic portal hypertension</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Naseem S., Varma N., Das R. et al. Pediatric patients with bicytopenia/ pancytopenia: Review of etiologies and clinico-hematological profile at a tertiary center. 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