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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">neurojour</journal-id><journal-title-group><journal-title xml:lang="ru">Неврологический журнал имени Л.О. Бадаляна</journal-title><trans-title-group xml:lang="en"><trans-title>L.O. Badalyan Neurological Journal</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2686-8997</issn><issn pub-type="epub">2712-794X</issn><publisher><publisher-name>ФГАУ «НМИЦ здоровья детей» Минздрава России</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.46563/2686-8997-2023-4-3-175-180</article-id><article-id custom-type="edn" pub-id-type="custom">qyuwmr</article-id><article-id custom-type="elpub" pub-id-type="custom">neurojour-109</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 СЛУЧАИ</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>Венозная мальформация как редкая причина нейропатии седалищного нерва</article-title><trans-title-group xml:lang="en"><trans-title>Venous malformation as a rare cause of sciatic neuropathy</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1047-6307</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Дружинина</surname><given-names>Евгения Сергеевна</given-names></name><name name-style="western" xml:lang="en"><surname>Druzhinina</surname><given-names>Evgeniya S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>К.м.н., доцент кафедры неврологии, нейрохирургии и медицинской генетики имени академика Л.О. Бадаляна педиатрического факультета ФГАОУ ВО РНИМУ им. Н.И. Пирогова Минздрава России, 117997, Москва.</p><p>e-mail: naumovaes@gmail.com</p><p> </p></bio><bio xml:lang="en"><p>Department of neurology, neurosurgery and medical genetics, Pediatric Faculty N.I. Pirogov Russian National Research Medical University; Department of nervous system diseases with course of medical genetics and pediatric neurology, Moscow, 117997, Russian Federation.</p><p>e-mail: umovaes@gmail.com</p></bio><email xlink:type="simple">naumovaes@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2519-9442</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Исаев</surname><given-names>Игорь В.</given-names></name><name name-style="western" xml:lang="en"><surname>Isaev</surname><given-names>Igor V.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7977-6412</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Костылев</surname><given-names>Фёдор А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kostylev</surname><given-names>Fedor A.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0168-8671</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Нарбутов</surname><given-names>Антон Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Narbutov</surname><given-names>Anton G.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0103-7422</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Заваденко</surname><given-names>Николай Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Zavadenko</surname><given-names>Nikolay N.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">ФГБОУ ВО «Российский национальный исследовательский медицинский университет имени Н.И. Пирогова»; Российская детская клиническая больница ФГАОУ ВО «Российский национальный исследовательский медицинский университет имени Н.И. Пирогова»<country>Россия</country></aff><aff xml:lang="en">N.I. Pirogov Russian National Research Medical University; Russian Children’s Clinical Hospital of the N.I. Pirogov Russian National Research Medical University<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru">Российская детская клиническая больница ФГАОУ ВО «Российский национальный исследовательский медицинский университет имени Н.И. Пирогова»<country>Россия</country></aff><aff xml:lang="en">Russian Children’s Clinical Hospital of the N.I. Pirogov Russian National Research Medical University<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru">ФГБОУ ВО «Российский национальный исследовательский медицинский университет имени Н.И. Пирогова»<country>Россия</country></aff><aff xml:lang="en">N.I. Pirogov Russian National Research Medical University<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>19</day><month>10</month><year>2023</year></pub-date><volume>4</volume><issue>3</issue><fpage>175</fpage><lpage>180</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Дружинина Е.С., Исаев И.В., Костылев Ф.А., Нарбутов А.Г., Заваденко Н.Н., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Дружинина Е.С., Исаев И.В., Костылев Ф.А., Нарбутов А.Г., Заваденко Н.Н.</copyright-holder><copyright-holder xml:lang="en">Druzhinina E.S., Isaev I.V., Kostylev F.A., Narbutov A.G., Zavadenko N.N.</copyright-holder><license 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://www.neuro-journal.ru/jour/article/view/109">https://www.neuro-journal.ru/jour/article/view/109</self-uri><abstract><p>Нейропатия седалищного нерва (СН) — редкий и трудный диагноз в педиатрической практике и часто сопровождается трудно контролируемой нейропатической болью. Самыми распространёнными причинами повреждения СН у детей являются травма и ятрогенные поражения, реже причиной становятся опухолевые и сосудистые образования, среди которых самые редкие — интраневральные венозные мальформации. Мы представляем клинический случай мальчика 13 лет с правосторонней нейропатией СН с невыраженным нейропатическим болевым синдромом, асимметрией стоп и скудными нарушениями моторной и сенсорной функций конечности в течение 5 лет, которые нарушали походку.</p><p>Нейрофизиологическое тестирование позволило локализовать процесс и обнаружило асимметрию сенсорных и моторных ответов при тестировании нервов ног, при электромиографии определены изменения в мышцах, иннервируемых СН справа. Магнитно-резонансная томография выявила увеличение правого СН в области таза с неоднородным накоплением контрастного вещества. Из-за боли в конечности и вынужденного её положения — согнутой в коленном суставе — в качестве терапевтической стратегии было выбрано хирургическое лечение в объёме эндоневрального невролиза в сочетании с таргетной терапией — приёмом иммунодепрессанта.</p><p>Гистологическое исследование интраневрального образования подтвердило наличие венозной мальформации в виде разнокалиберных толсто- и тонкостенных сосудистых полостей с наличием фиброза и лимфоцитарной инфильтрацией. Результатом лечения было купирование нейропатического болевого синдрома и восстановление ходьбы у ребёнка.</p><p>Соблюдение этических стандартов. От законного представителя пациента получено добровольное информированное согласие на проведение лечения и публикацию данных.</p><sec><title>Участие авторов</title><p>Участие авторов:Дружинина Е.С. — обзор публикаций по теме статьи, сбор и анализ данных, написание текста рукописи;Исаев И.В. — выполнение хирургического вмешательства, написание текста статьи;Костылев Ф.А. — сбор данных, написание текста статьи;Нарбутов А.Г. — выполнение хирургического вмешательства, написание текста статьи;Заваденко Н.Н. — написание текста статьи, проверка критически важного интеллектуального содержания, окончательное утверждение для публикации рукописи.</p></sec><sec><title>Финансирование</title><p>Финансирование. Исследование не имело спонсорской поддержки.</p></sec><sec><title>Конфликт интересов</title><p>Конфликт интересов. Авторы заявляют об отсутствии конфликта интересов.</p></sec><sec><title>Поступила 13</title><p>Поступила 13.03.2023Принята к печати 27.03.2023Опубликована 13.10.2023</p></sec></abstract><trans-abstract xml:lang="en"><p>Sciatic neuropathy is rare and difficult to diagnose in pediatrics and often associated with difficult to control neuropathic pain. The most common causes of sciatic nerve damage in children include trauma and iatrogenic lesions, less often the cause is tumor and vascular formations, among which intraneural venous malformations are the rarest. We present a clinical case of a 13-year boy suffered from right sciatic pain neuropathy with unexpressed neuropathic pain syndrome, asymmetry of the feet, scant impairment of motor and sensory function of the limb for five years, which changed the  gait. Neurophysiological testing showed possible location of the process, an asymmetry of sensory and motor responses when testing the nerves of the legs, and abnormal EMG in sciatic-innervated muscles. The magnetic resonance imaging (MRI) showed focal enlargement of the right sciatic nerve in the pelvic region with enhancement upon administration of contrast. Due to the presence of pain in the limb and its forced position — bent at the knee joint, surgical treatment — endoneural neurolysis in combination with targeted therapy by immunosuppressant, was chosen as a therapeutic strategy. The histological study of the intraneural formation confirmed the presence of a venous malformation (VM) in the form of heterogeneous thick– and thin-walled vascular cavities by the presence of fibrosis and lymphocytic infiltration. The result of the treatment was the relief of neuropathic pain syndrome and the recovering of the child gait.</p><p>Compliance with ethical standards. Voluntary informed consent was obtained from the patient’s legal representative for treatment and publication of data.</p><sec><title>Contribution</title><p>Contribution:Druzhinina E.S. — review of publications on the topic of the article, collection and analysis of data, writing the text of the manuscript;Isaev I.V. — performing a surgical intervention, writing the text of an article;Kostylev F.A. — data collection, writing the text of article;Narbutov A.G. — performing a surgical intervention, writing the text of an article;Zavadenko N.N. — writing the text of the article, checking critical intellectual content, final approval for publication of the manuscript.All co-authors are responsible for the  integrity of all parts of the manuscript and approval of its final version.</p></sec><sec><title>Acknowledgements</title><p>Acknowledgements. The study had no sponsorship.</p></sec><sec><title>Conflict of interest</title><p>Conflict of interest. The authors declare no conflict of interest.</p></sec><sec><title>Received</title><p>Received: March 13, 2023Accepted:  March 27, 2023Published: October 13, 2023</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>венозная мальформация</kwd><kwd>нейропатия седалищного нерва</kwd><kwd>педиатрия</kwd><kwd>магнитно-резонансная томография</kwd><kwd>электромиография</kwd></kwd-group><kwd-group xml:lang="en"><kwd>venous malformation</kwd><kwd>sciatic neuropathy</kwd><kwd>paediatrics</kwd><kwd>magnetic resonance imaging</kwd><kwd>electromyography</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">Greene A.K., Liu A.S., Mulliken J.B., Chalache K., Fishman S.J. Vascular anomalies in 5,621 patients: guidelines for referral. J. Pediatr. 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