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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">clinendo</journal-id><journal-title-group><journal-title xml:lang="ru">Клиническая эндоскопия</journal-title><trans-title-group xml:lang="en"><trans-title>Filin’s Clinical endoscopy</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2415-7813</issn><publisher><publisher-name>"Global Media technology" Ltd</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.31146/2415-7813-endo-68-2-45-51</article-id><article-id custom-type="elpub" pub-id-type="custom">clinendo-712</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 OBSERVATIONS</subject></subj-group></article-categories><title-group><article-title>Дефицит лизосомной кислой липазы и эозинофильный эзофагит у подростка - особенности диагностики и ведения при сочетании двух орфанных заболеваний</article-title><trans-title-group xml:lang="en"><trans-title>Lysosomal acid lipase deficiency and eosinophilic esophagitis in an adolescent - diagnostic and management in the combination of two orphan diseases</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7379-7298</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Будкина</surname><given-names>Т. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Budkina</surname><given-names>T. N.</given-names></name></name-alternatives><email xlink:type="simple">tatyana-budkina@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/0000-0002-1549-2728</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Анушенко</surname><given-names>А. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Anushenko</surname><given-names>A. O.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.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/0000-0002-8305-7592</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лохматов</surname><given-names>М. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Lokhmatov</surname><given-names>M. M.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.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/0000-0002-3056-403X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Макарова</surname><given-names>С. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Makarova</surname><given-names>S. G.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.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/0000-0002-6945-1104</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Вязанкина</surname><given-names>С. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Vyazankina</surname><given-names>S. S.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.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/0000-0002-3977-0657</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Винокурова</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Vinokurova</surname><given-names>A. V.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.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/0000-0002-1107-8693</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Куликов</surname><given-names>К. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kulikov</surname><given-names>K. A.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.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/0009-0003-6495-0064</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Илансская</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Ilansskaya</surname><given-names>M. V.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Федеральное государственное автономное учреждение «Национальный медицинский исследовательский центр здоровья детей» Министерства здравоохранения Российской Федерации</institution></aff><aff xml:lang="en"><institution>National Medical Research Center for Children’s Health</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>23</day><month>04</month><year>2026</year></pub-date><volume>68</volume><issue>2</issue><fpage>45</fpage><lpage>51</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Будкина Т.Н., Анушенко А.О., Лохматов М.М., Макарова С.Г., Вязанкина С.С., Винокурова А.В., Куликов К.А., Илансская М.В., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Будкина Т.Н., Анушенко А.О., Лохматов М.М., Макарова С.Г., Вязанкина С.С., Винокурова А.В., Куликов К.А., Илансская М.В.</copyright-holder><copyright-holder xml:lang="en">Budkina T.N., Anushenko A.O., Lokhmatov M.M., Makarova S.G., Vyazankina S.S., Vinokurova A.V., Kulikov K.A., Ilansskaya M.V.</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://clinendo.elpub.ru/jour/article/view/712">https://clinendo.elpub.ru/jour/article/view/712</self-uri><abstract><p>Целью публикации является представление редкого, ранее не описанного клинического случая коморбидного течения орфанного заболевания Дефицит лизосомной кислой липазы (ДЛКЛ) и эозинофильного эзофагита (ЭоЭ). ДЛКЛ - это прогрессирующее системное заболевание, которое приводит к накоплению липидов в органах и тканях с преимущественным поражением печени и сердечно-сосудистой системы. ЭоЭ - это хроническое иммуноопосредованное заболевание пищевода, характеризующееся выраженным эозинофильным воспалением его слизистой оболочки и симптомами дисфункции пищевода, зачастую протекающее на фоне различных сопутствующих аллергических заболеваний у пациента. По данным международных публикаций проведён анализ изменений, выявляемых при проведении ЭГДС у пациентов с ДЛКЛ. В описании случая показано значение ЭГДС у детей с этим заболеванием. Указаны выявляемые эндоскопические и морфологические изменения. Описаны современные возможности терапии при ДЛКЛ и ЭоЭ у детей.</p></abstract><trans-abstract xml:lang="en"><p>This publication presents a rare, previously unreported clinical case of comorbidity between the orphan disease lysosomal acid lipase deficiency (LALD) and eosinophilic esophagitis (EoE). LALD is a progressive systemic disease that leads to lipid accumulation in organs and tissues, primarily affecting the liver and cardiovascular system. EoE is a chronic immune-mediated disease of the esophagus, characterized by severe eosinophilic inflammation of the esophageal mucosa and symptoms of esophageal dysfunction, often associated with various comorbid allergic diseases. Based on international publications, an analysis of changes detected during EGDS in patients with LALD is conducted. This case report demonstrates the value of EGDS in children with this disease. The endoscopic and morphological changes detected are highlighted. Current treatment options for LALD and EoE in children are described.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>дефицит лизосомной кислой липазы</kwd><kwd>эозинофильный эзофагит</kwd><kwd>дети</kwd><kwd>эндоскопическое исследование</kwd><kwd>морфологическое исследование</kwd><kwd>орфанное заболевание</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Lysosomal Acid Lipase Deficiency</kwd><kwd>eosinophilic esophagitis</kwd><kwd>children upper endoscopy</kwd><kwd>histological features</kwd><kwd>orphan disease</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">[Lysosomal acid lipase deficiency]. Clinical guidelines of the Russian Federation. 2023. (in Russ.)@@ Дефицит лизосомной кислой липазы. Клинические рекомендации РФ. 2023 г.</mixed-citation><mixed-citation xml:lang="en">[Lysosomal acid lipase deficiency]. Clinical guidelines of the Russian Federation. 2023. 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