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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="en"><front><journal-meta><journal-id journal-id-type="publisher-id">epilepsia</journal-id><journal-title-group><journal-title xml:lang="en">Epilepsy and paroxysmal conditions</journal-title><trans-title-group xml:lang="ru"><trans-title>Эпилепсия и пароксизмальные состояния</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2077-8333</issn><issn pub-type="epub">2311-4088</issn><publisher><publisher-name>IRBIS LLC</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17749/2077-8333/epi.par.con.2022.110</article-id><article-id custom-type="elpub" pub-id-type="custom">epilepsia-794</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="en"><subject>ORIGINAL ARTICLES</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ОРИГИНАЛЬНЫЕ СТАТЬИ</subject></subj-group></article-categories><title-group><article-title>Surgical treatment of MRI-negative drug resistant epilepsy in children</article-title><trans-title-group xml:lang="ru"><trans-title>Хирургическое лечение МР-негативной фармакорезистентной эпилепсии у детей</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7170-7415</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Маматханов</surname><given-names>М. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Mamatkhanov</surname><given-names>M. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Маматханов Магомед Рамазанович – д.м.н., старший научный сотрудник научно-исследовательской лаборатории нейрохирургии детского возраста </p><p>Санкт-Петербург</p><p>РИНЦ SPIN-код: 7426-2245</p></bio><bio xml:lang="en"><p>Magomed R. Mamatkhanov – Dr. Med. Sc., Senior Researcher, Research Laboratory of Pediatric Neurosurgery</p><p>Saint Petersburg</p><p>RSCI SPIN-code: 7426-2245.</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4091-7396</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ушанов</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Ushanov</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ушанов Всеслав Всеволодович – клинический ординатор кафедры нейрохирургии</p><p>Санкт-Петербург</p></bio><bio xml:lang="en"><p>Vseslav V. Ushanov – Clinical Resident, Chair of Neurosurgery</p><p>Saint Petersburg</p></bio><email xlink:type="simple">ushanov.vseslav@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9787-8132</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Герасимов</surname><given-names>А. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Gerasimov</surname><given-names>A. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Герасимов Александр Павлович – старший научный сотрудник научно-исследовательской лаборатории нейрохирургии детского возраста </p><p>Санкт-Петербург</p><p>РИНЦ SPIN-код: 9108-9354.</p></bio><bio xml:lang="en"><p>Alexandr P. Gerasimov – MD, Senior Researcher, Research Laboratory of Pediatric Neurosurgery</p><p>Saint Petersburg</p><p>RSCI SPIN-code: 9108-9354</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1635-6621</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Хачатрян</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Khachatryan</surname><given-names>W. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Хачатрян Вильям Арамович – д.м.н., профессор, заведующий научно-исследовательской лабораторией нейрохирургии детского возраста </p><p>Санкт-Петербург</p><p>WoS ResearcherID: G-4002-2018; </p><p>РИНЦ SPIN-код: 7555-8039.</p><p> </p></bio><bio xml:lang="en"><p>William A. Khachatryan – Dr. Med. Sc., Professor, Head of Research Laboratory of Pediatric Neurosurgery</p><p>Saint Petersburg, Russia</p><p>WoS ResearcherID: G-4002- 2018; </p><p>RSCI SPIN-code: 7555-8039.</p><p> </p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное учреждение «Национальный медицинский исследовательский центр им. В.А. Алмазова» Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Almazov National Medical Research Centre</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>27</day><month>07</month><year>2022</year></pub-date><volume>14</volume><issue>2</issue><fpage>195</fpage><lpage>203</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Mamatkhanov M.R., Ushanov V.V., Gerasimov A.P., Khachatryan W.A., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Маматханов М.Р., Ушанов В.В., Герасимов А.П., Хачатрян В.А.</copyright-holder><copyright-holder xml:lang="en">Mamatkhanov M.R., Ushanov V.V., Gerasimov A.P., Khachatryan W.A.</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://www.epilepsia.su/jour/article/view/794">https://www.epilepsia.su/jour/article/view/794</self-uri><abstract><sec><title>Objective</title><p>Objective: analysis of treatment tactics for patients with magnetic-resonance-imaging (MRI) negative epilepsy, characteristics of morphological data and assessment of the treatment results.</p></sec><sec><title>Material and methods</title><p>Material and methods. Within the period of 2013–2021, 31 patients under the age of 18 with drug-resistant nonlesional epilepsy were examined according to the “epilepsy” MRI-protocol. Patient distribution by gender, age, duration of illness, age of onset, number of anticonvulsant protocols, frequency of seizures at the time of initiated treatment, side and lobe of the seizure generation zone was analyzed. The instrumental diagnostic methods were noted in a specially designed study form and reported contribution of relevant result to epileptogenic zone. The distribution of patients according to surgical intervention and histological data was also analyzed.</p></sec><sec><title>Results</title><p>Results. Resection surgery was carried out in 26 (83.9%) patients. Palliative operations were performed in 5 (16.1%) cases with bilateral localization of the epileptic focus: callosotomy (3) and vagal nerve stimulation (2). Twelve months post-therapy outcomes by Engel class I were found in 19 (61.3%) patients, class II – in 6 (19.4%), class III – in 5 (16.1%), and class IV – in 1 (3.2%). Long-term results of surgical treatment were assessed 3 and 5 years later.</p></sec><sec><title>Conclusion</title><p>Conclusion. Surgery of MRI-negative epilepsy can be effective with seizure-free outcome in 61.3% of cases, but requires use of additional diagnostic methods in relation to standard pre-surgery examination to localize epileptogenic zone.</p></sec></abstract><trans-abstract xml:lang="ru"><sec><title>Цель</title><p>Цель: анализ тактики ведения детей с магнитно-резонансно-негативной (МР-негативной) эпилепсией, характеристика морфологических данных и оценка результатов лечения.</p></sec><sec><title>Материал и методы</title><p>Материал и методы. В исследование включен 31 пациент в возрасте до 18 лет с верифицированным диагнозом фармакорезистентной эпилепсии и отсутствием структурного поражения по данным магнитно-резонансной томографии головного мозга по протоколу «эпилепсия» за период 2013–2021 гг. Проанализировано распределение больных по полу, возрасту, длительности заболевания, возрасту дебюта, числу использованных схем противосудорожной терапии, частоте приступов на момент начала лечения, а также стороне и доле зоны генерации приступа. Для оценки этапа предоперационного обследования пациентов в специально разработанной карте исследования были выделены возможные инструментальные методы диагностики с указанием вклада результата отдельного метода в определение эпилептогенной зоны. Также представлено распределение больных по типу хирургического вмешательства и данным гистологического исследования.</p></sec><sec><title>Результаты</title><p>Результаты. Резекционные хирургические вмешательства были выполнены у 26 (83,9%) пациентов. В 5 (16,1%) случаях с двусторонней локализацией эпилептического очага проведены паллиативные операции: каллезотомия (3) и стимуляция блуждающего нерва (2). Через 12 мес исходы I класса по J. Engel отмечены у 19 (61,3%) больных, II класса – у 6 (19,4%), III класса – у 5 (16,1%), IV класса – у 1 (3,2%). Оценены отдаленные результаты хирургического лечения через 3 и 5 лет.</p></sec><sec><title>Заключение</title><p>Заключение. Хирургический метод лечения МР-негативной эпилепсии может быть эффективным, с полным прекращением припадков у 61,3% пациентов, но требует использования дополнительных диагностических методов по отношению к стандарту предоперационного обследования для локализации эпилептогенной зоны.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>Фармакорезистентная эпилепсия</kwd><kwd>дети</kwd><kwd>магнитно-резонансная томография</kwd><kwd>МРТ</kwd><kwd>МР-негативная эпилепсия</kwd><kwd>хирургия эпилепсии</kwd><kwd>приступы</kwd><kwd>исход хирургического вмешательства</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Pharmacoresistant epilepsy</kwd><kwd>children</kwd><kwd>magnetic resonance imaging</kwd><kwd>MRI</kwd><kwd>MRI-negative epilepsy</kwd><kwd>surgery for epilepsy</kwd><kwd>seizures</kwd><kwd>outcome of surgery</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено в рамках государственного задания № 121031000359-3 «Разработка новых подходов в диагностике медиобазальной фармакорезистентной эпилепсии на основе гистопротеомики эпилептических очагов».</funding-statement><funding-statement xml:lang="en">The study was carried out within the framework of State Task No. 121031000359-3 “Development of new approaches in the diagnosis of mediobasal pharmacoresistant epilepsy based on histoproteomics of epileptic foci”.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Крылов В.В. 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