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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">medsovet</journal-id><journal-title-group><journal-title xml:lang="ru">Медицинский Совет</journal-title><trans-title-group xml:lang="en"><trans-title>Meditsinskiy sovet = Medical Council</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2079-701X</issn><issn pub-type="epub">2658-5790</issn><publisher><publisher-name>REMEDIUM GROUP Ltd.</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21518/ms2025-286</article-id><article-id custom-type="elpub" pub-id-type="custom">medsovet-9266</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>ТРУДНЫЙ ДИАГНОЗ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>DIFFICULT DIAGNOSIS</subject></subj-group></article-categories><title-group><article-title>Маски редкой патологии: клинический случай дефицита лизосомной кислой липазы с малосимптомным началом и отсроченной верификацией диагноза</article-title><trans-title-group xml:lang="en"><trans-title>Masks for a rare pathology: A clinical case of lysosomal acid lipase deficiency with asymptomatic onset and delayed verification of diagnosis</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0058-3803</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пшеничникова</surname><given-names>И. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Pshenichnikova</surname><given-names>I. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Пшеничникова Ирина Игоревна - к.м.н., доцент кафедры педиатрии имени академика Г.Н. Сперанского, РМАНПО; специалист организационно-методического отдела по педиатрии, НИИОЗММ; врач-педиатр, Детская ГКБ им. З.А. Башляевой.</p><p>125993, Москва, ул. Баррикадная, д. 2/1, стр. 1; 115088, Москва, ул. Шарикоподшипниковская, д. 9; 125373, Москва, ул. Героев Панфиловцев, д. 28</p></bio><bio xml:lang="en"><p>Irina I. Pshenichnikova - Cand. Sci. (Med.), Associate Professor of the Department of Pediatrics named after Academician G.N. Speransky, Russian Medical Academy of Continuous Professional Education; Pediatrician, Bashlyaeva Children’s City Clinical Hospital; Specialist of the Organizational and Methodical Department of Pediatrics, Research Institute of Healthcare Organization and Medical Management.</p><p>2/1, Bldg. 1, Barrikadnaya St., Moscow, 125993; 28, Geroyev Panfilovtsev St., Moscow, 125373; 9, Sharikopodshipnikovskaya St., Moscow, 115088</p></bio><email xlink:type="simple">Pshenichnikovaii@rmapo.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/0000-0003-4200-4598</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Захарова</surname><given-names>И. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Zakharova</surname><given-names>I. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Захарова Ирина Николаевна - д.м.н., профессор, заведующая кафедрой педиатрии имени академика Г.Н. Сперанского.</p><p>125993, Москва, ул. Баррикадная, д. 2/1, стр. 1</p></bio><bio xml:lang="en"><p>Irina N. Zakharova - Dr. Sci. (Med.), Professor, Head of the Department of Pediatrics named after G.N. Speransky, Russian Medical Academy of Continuous Professional Education.</p><p>2/1, Bldg. 1, Barrikadnaya St., Moscow, 125993</p></bio><email xlink:type="simple">zakharova-rmapo@yandex.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/0000-0001-5544-204X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Борзакова</surname><given-names>С. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Borzakova</surname><given-names>S. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Борзакова Светлана Николаевна - к.м.н., доцент кафедры педиатрии имени академика Г.Н. Сперанского, РМАНПО; заведующий организационно-методическим отделом по педиатрии, НИИОЗММ; врач-гастроэнтеролог, Детская ГКБ им. З.А. Башляевой.</p><p>125993, Москва, ул. Баррикадная, д. 2/1, стр. 1; 115088, Москва, ул. Шарикоподшипниковская, д. 9; 125373, Москва, ул. Героев Панфиловцев, д. 28</p></bio><bio xml:lang="en"><p>Svetlana N. Borzakova - Cand. Sci. (Med.), Associate Professor, Department of Pediatrics named after Academician G.N. Speransky, Russian Medical Academy of Continuous Professional Education; Head, Organisational-Methodological Department for Pediatrics, Research Institute of Healthcare Organization and Medical Management; Pediatric Gastroenterologist, Bashlyaeva Children’s City Clinical Hospital.</p><p>2/1, Bldg. 1, Barrikadnaya St., Moscow, 125993; 9, Sharikopodshipnikovskaya St., Moscow, 115088; 28, Geroyev Panfilovtsev St., Moscow, 125373</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/0009-0000-0432-4617</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мирошина</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Miroshina</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мирошина Александра Владимировна - руководитель организационно-аналитического отдела, Детская ГКБ им. З.А. Башляевой; аналитик организационно-методического отдела по педиатрии, НИИОЗММ.</p><p>125373, Москва, ул. Героев Панфиловцев, д. 28; 115088, Москва, ул. Шарикоподшипниковская, д. 9</p></bio><bio xml:lang="en"><p>Aleksandra V. Miroshina - Head, Organisational-Analytical Department, Bashlyaeva Children’s City Clinical Hospital; Analyst, Organisational-Methodological Department for Paediatrics, Research Institute of Healthcare Organization and Medical Management.</p><p>28, Geroyev Panfilovtsev St., Moscow, 125373; 9, Sharikopodshipnikovskaya St., Moscow, 115088</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1518-6552</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ежов</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Ezhov</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ежов Марат Владиславович - д.м.н., профессор, главный научный сотрудник лаборатории нарушений липидного обмена Научно-исследовательского института клинической кардиологии имени А.Л. Мясникова.</p><p>121552, Москва, ул. Академика Чазова, д. 15а</p></bio><bio xml:lang="en"><p>Marat V. Ezhov - Dr. Sci. (Med.), Professor, Chief Researcher, Laboratory of Lipid Metabolism Disorders, Myasnikov Research Institute of Clinical Cardiology, National Medical Research Centre of Cardiology named after Academician E.I. Chazov.</p><p>15a, Academician Chazov St., Moscow, 121552</p></bio><email xlink:type="simple">marat_ezhov@mail.ru</email><xref ref-type="aff" rid="aff-4"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Российская медицинская академия непрерывного профессионального образования; Детская городская клиническая больница имени З.А. Башляевой; Научно-исследовательский институт организации здравоохранения и медицинского менеджмента Департамента здравоохранения Москвы</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Russian Medical Academy of Continuous Professional Education; Bashlyaeva Children’s City Clinical Hospital; Research Institute of Healthcare Organization and Medical Management</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Российская медицинская академия непрерывного профессионального образования</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Russian Medical Academy of Continuous Professional Education</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Детская городская клиническая больница имени З.А. Башляевой; Научно-исследовательский институт организации здравоохранения и медицинского менеджмента Департамента здравоохранения Москвы</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Bashlyaeva Children’s City Clinical Hospital; Research Institute of Healthcare Organization and Medical Management</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Национальный медицинский исследовательский центр кардиологии имени академика Е.И. Чазова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National Medical Research Centre of Cardiology named after Academician E.I. Chazov</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>02</day><month>08</month><year>2025</year></pub-date><volume>0</volume><issue>11</issue><fpage>169</fpage><lpage>177</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Пшеничникова И.И., Захарова И.Н., Борзакова С.Н., Мирошина А.В., Ежов М.В., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Пшеничникова И.И., Захарова И.Н., Борзакова С.Н., Мирошина А.В., Ежов М.В.</copyright-holder><copyright-holder xml:lang="en">Pshenichnikova I.I., Zakharova I.N., Borzakova S.N., Miroshina A.V., Ezhov 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://www.med-sovet.pro/jour/article/view/9266">https://www.med-sovet.pro/jour/article/view/9266</self-uri><abstract><p>Дефицит лизосомной кислой липазы (ДЛКЛ, болезнь накопления эфиров холестерина, OMIM #278000) – редкое аутосомно-рецессивное заболевание, обусловленное мутациями в гене LIPA, приводящее к нарушению гидролиза эфиров холестерина и триглицеридов в лизосомах. Проявляется гепатомегалией, дислипидемией, повышением трансаминаз, стеатозом, а при тяжелых формах – прогрессирующим фиброзом печени и ранним атеросклерозом. Описан клинический случай ДЛКЛ у девочки 8 лет, характеризующийся дебютом в раннем возрасте, отсутствием типичной задержки физического развития и выраженным полиморфизмом клинических проявлений. На протяжении нескольких лет преобладала гастроинтестинальная симптоматика в сочетании с анемией, носовыми кровотечениями и утомляемостью, расценивавшимися как функциональные нарушения. Диагностический поиск был инициирован поздно, несмотря на наличие гепатомегалии, стойкой гиперхолестеринемии и повышения трансаминаз. Диагноз верифицирован на основании снижения ферментативной активности лизосомной кислой липазы и молекулярно-генетического анализа (вариант c.894G&gt;A в гене LIPA в гомозиготном состоянии). Отмечено прогрессирование стеатоза и фиброза печени при отсутствии своевременного начала заместительной ферментной терапии. Клинический пример иллюстрирует сложность ранней диагностики лизосомных болезней накопления в педиатрической практике. Случай подчеркивает диагностические сложности, обусловленные фенотипической вариабельностью и клиническим сходством с более распространенными состояниями, включая семейную гиперхолестеринемию. В статье обсуждаются дифференциально-диагностические подходы, в числе которых исключение вирусных гепатитов, болезни Вильсона, аутоиммунных заболеваний печени, наследственных болезней обмена. Подчеркивается необходимость ранней диагностики, проведения семейного скрининга и оптимизации доступа к заместительной ферментной терапии. Обозначены перспективы разработки программ неонатального скрининга и направлений таргетной терапии, включая генные технологии. Данный случай акцентирует необходимость повышения настороженности клиницистов и внедрения системных диагностических алгоритмов в клиническую практику.</p></abstract><trans-abstract xml:lang="en"><p>Lysosomal acid lipase deficiency (LALD, cholesterol ester storage disease, OMIM #278000) is a rare autosomal recessive disorder resulting from underlying LIPA gene mutations, leading to impaired hydrolysis of cholesterol esters and triglycerides within lysosomes. Common presenting symptoms include hepatomegaly, dyslipidemia, increased transaminases, steatosis, and in severe forms – progressive liver fibrosis and early atherosclerosis. The presented clinical case describes the management of LALD in an 8-year-old girl, characterized by early age onset, absence of typical delay in physical development and pronounced polymorphism of clinical manifestations. For several years, gastrointestinal symptoms combined with anemia, nosebleeding, and fatigue, which were evaluated as functional disorders prevailed. The diagnostic search was initiated late, despite the presence of hepatomegaly, persistent hypercholesterolemia, and elevated transaminases. The diagnosis was verified based on decreased enzymatic activity of lysosomal acid lipase and results of the molecular genetic analysis (variant c.894G&gt;A in the LIPA gene in the homozygous state). Liver steatosis and fibrosis progression was observed in the absence of timely initiation of enzyme replacement therapy. A clinical example demonstrates the difficulties of early diagnosis of lysosomal storage diseases in pediatric practice. The case highlights the diagnostic challenges due to phenotypic variability and clinical similarities with more common disorders, including familial hypercholesterolemia. The article discusses differential diagnostic approaches, including exclusion of viral hepatitis, Wilson's disease, autoimmune liver diseases, and hereditary metabolic diseases. The need for early diagnosis, family screening and optimization of access to enzyme replacement therapy has been underlined. The article also outlines promising directions in the development of neonatal screening programs and areas of targeted therapy, including gene technologies. This case emphasizes the need to increase the alertness of clinicians and introduce systemic diagnostic algorithms into clinical practice.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>болезнь накопления эфиров холестерина</kwd><kwd>лизосомные болезни накопления</kwd><kwd>гиперхолестеринемия</kwd><kwd>стеатогепатит</kwd><kwd>фиброз печени</kwd><kwd>эзетимиб</kwd><kwd>диагностика</kwd><kwd>ферментозаместительная терапия</kwd><kwd>педиатрическая практика</kwd></kwd-group><kwd-group xml:lang="en"><kwd>cholesterol ester storage disease</kwd><kwd>lysosomal storage diseases</kwd><kwd>hypercholesterolemia</kwd><kwd>steatohepatitis</kwd><kwd>liver fibrosis</kwd><kwd>ezetimibe</kwd><kwd>diagnostics</kwd><kwd>enzyme replacement therapy</kwd><kwd>pediatric practice</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">Burton BK, Deegan PB, Enns GM, Guardamagna O, Horslen S, Hovingh GK et al. 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