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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Terapevticheskii arkhiv</journal-id><journal-title-group><journal-title xml:lang="en">Terapevticheskii arkhiv</journal-title><trans-title-group xml:lang="ru"><trans-title>Терапевтический архив</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0040-3660</issn><issn publication-format="electronic">2309-5342</issn><publisher><publisher-name xml:lang="en">LLC Obyedinennaya Redaktsiya</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">688041</article-id><article-id pub-id-type="doi">10.26442/00403660.2025.12.203453</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Original articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Оригинальные статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Cryptogenic steatotic liver disease: a clinical and instrumental study</article-title><trans-title-group xml:lang="ru"><trans-title>Криптогенная стеатотическая болезнь печени: клинико-инструментальное исследование</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8099-8602</contrib-id><name-alternatives><name xml:lang="en"><surname>Goncharov</surname><given-names>Alexey A.</given-names></name><name xml:lang="ru"><surname>Гончаров</surname><given-names>Алексей Александрович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="ru"><p>мл. науч. сотр. отд-ния гастроэнтерологии, гепатологии и диетотерапии</p></bio><email>thisalexis@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4417-8076</contrib-id><name-alternatives><name xml:lang="en"><surname>Isakov</surname><given-names>Vasily A.</given-names></name><name xml:lang="ru"><surname>Исаков</surname><given-names>Василий Андреевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="ru"><p>д-р мед. наук, проф., зав. отд-нием гастроэнтерологии, гепатологии и диетотерапии</p></bio><email>thisalexis@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6114-564X</contrib-id><name-alternatives><name xml:lang="en"><surname>Maev</surname><given-names>Igor V.</given-names></name><name xml:lang="ru"><surname>Маев</surname><given-names>Игорь Вениаминович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="ru"><p>акад. РАН, д-р мед. наук, проф., зав. каф. пропедевтики внутренних болезней и гастроэнтерологии</p></bio><email>thisalexis@gmail.com</email><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Federal Research Centre of Nutrition, Biotechnology and Food Safety</institution></aff><aff><institution xml:lang="ru">ФГБУН «Федеральный исследовательский центр питания, биотехнологии и безопасности пищи»</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Russian University of Medicine</institution></aff><aff><institution xml:lang="ru">ФГБОУ ВО «Российский университет медицины» Минздрава России</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2026-02-14" publication-format="electronic"><day>14</day><month>02</month><year>2026</year></pub-date><volume>97</volume><issue>12</issue><issue-title xml:lang="en">Vario (various)</issue-title><issue-title xml:lang="ru">Vario (разное)</issue-title><fpage>987</fpage><lpage>993</lpage><history><date date-type="received" iso-8601-date="2025-07-21"><day>21</day><month>07</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-09-22"><day>22</day><month>09</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2026, Consilium Medicum</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2026, ООО "Консилиум Медикум"</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="en">Consilium Medicum</copyright-holder><copyright-holder xml:lang="ru">ООО "Консилиум Медикум"</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by-nc-sa/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://ter-arkhiv.ru/0040-3660/article/view/688041">https://ter-arkhiv.ru/0040-3660/article/view/688041</self-uri><abstract xml:lang="en"><p><bold>Background.</bold> Recent classification of steatotic liver disorders was published in 2023, where a new form – cryptogenic steatotic liver disease (CSLD) was introduced.</p> <p><bold>Aim. </bold>To assess the prevalence of CSLD within the spectrum of liver disorders associated with steatosis, and to describe its clinical and instrumental characteristics.</p> <p><bold>Materials and methods.</bold> A retrospective search was performed in the database of subjects underwent vibration-controlled transient liver elastography (<italic>n</italic>=4,673). Criteria of CSLD and other steatotic liver diseases were based on EASL guidelines. Liver stiffness and data of controlled attenuation parameter assessment were used to establish stage of liver fibrosis and degree of steatosis of the liver. Body composition was evaluated using bioimpedance analysis. Serum parameters of lipid and carbohydrate metabolism were assessed.</p> <p><bold>Results.</bold> CSLD was found in 22 (0.8%) of total number of subjects with the presence of hepatic steatosis (<italic>n</italic>=2,643). Advanced stages of fibrosis (F2–F4) and degree of steatosis (S3) were less prevalent in CSLD group compared to MASLD: 9.1% vs 29.3%; <italic>p</italic>=0.02; S3 27.3% vs 67.6%; <italic>p</italic>&lt;0.001 accordingly. Compared to the control group (<italic>n</italic>=266) without steatosis and fibrosis, patients with CSLD had a greater body mass index (Median [Q1–Q3]: 24.1 [22.1–24.5] kg/m<sup>2</sup> vs 22.4 [20.7–23.7] kg/m<sup>2</sup>; <italic>p</italic>=0.008), primarily due to greater fat mass (19.0 [16.6–26.7] kg vs 16.4 [12.2–20.5] kg; <italic>p</italic>=0.03). No significant difference was found between the CSLD and the control group on the demographic characteristics, serum lipid and carbohydrate metabolism parameters.</p> <p><bold>Conclusion. </bold>CSLD is a rare condition. Patients with CSLD had greater fat mass compared to the control group; however, both groups were characterized by normal values of body mass index, serum lipid and carbohydrate metaboliс parameters.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Обоснование.</bold> В 2023 г. опубликована новая классификация заболеваний, проявляющихся стеатозом печени, в которой введено несколько новых нозологических единиц, включая криптогенную стеатотическую болезнь печени (КСБП).</p> <p><bold>Цель.</bold> Оценить распространенность КСБП в структуре заболеваний, проявляющихся стеатозом печени, и ее клинико-инструментальную характеристику.</p> <p><bold>Материалы и методы.</bold> Проведен ретроспективный анализ базы данных, включающей 4673 пациента, у которых оценивались стеатоз и фиброз печени. Критерии КСБП и других заболеваний печени основывались на рекомендациях Европейской ассоциации по изучению печени. Степени стеатоза и стадии фиброза печени определялись при помощи вибрационно контролируемой транзиентной эластографии печени с оценкой контролируемого параметра затухания ультразвукового сигнала. Состав тела пациентов изучался с помощью биоимпедансометрии. Проводилось исследование показателей жирового и углеводного обмена крови.</p> <p><bold>Результаты. </bold>Распространенность КСБП составила 0,8% (<italic>n</italic>=22) среди пациентов с выявленным стеатозом печени (<italic>n</italic>=2643). В группе КСБП по сравнению с группой стеатотической болезни печени, ассоциированной с метаболической дисфункцией, 3-я степень стеатоза печени S3 (27,3% против 67,6%; <italic>p</italic>&lt;0,001) и стадии фиброза F2–F4 (9,1% против 29,3%; <italic>p</italic>=0,02) встречались достоверно реже. Группа КСБП отличалась от группы контроля (<italic>n</italic>=266) без стеатоза и фиброза печени индексом массы тела (медиана [Q1–Q3]: 24,1 [22,1–24,5] кг/м<sup>2</sup> против 22,4 [20,7–23,7] кг/м<sup>2</sup>; <italic>p</italic>=0,008) за счет жировой массы (19,0 [16,6–26,7] кг против 16,4 [12,2–20,5] кг; <italic>p</italic>=0,03). Группа КСБП достоверно не отличалась от контрольной группы половозрастной структурой, показателями липидного профиля и углеводного обмена.</p> <p><bold>Заключение.</bold> КСБП является редким заболеванием. Пациенты с КСБП от лиц контрольной группы отличаются только жировой массой, при этом индекс массы тела у обеих групп находится в пределах нормальных значений. Показатели жирового и углеводного обмена в группе КСБП не отличаются от таковых у практически здоровых лиц.</p></trans-abstract><kwd-group xml:lang="en"><kwd>cryptogenic steatotic liver disease</kwd><kwd>metabolic associated steatotic liver disease</kwd><kwd>controlled attenuation parameter</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>криптогенная стеатотическая болезнь печени</kwd><kwd>стеатотическая болезнь печени, ассоциированная с метаболической дисфункцией</kwd><kwd>контролируемый параметр затухания</kwd></kwd-group><funding-group><funding-statement xml:lang="en">Fundamental research FGMF-2025-0003</funding-statement><funding-statement xml:lang="ru">Публикация подготовлена в рамках выполнения ФИ FGMF-2025-0003</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Mitra S, De A, Chowdhury A. Epidemiology of non-alcoholic and alcoholic fatty liver diseases. Transl Gastroenterol Hepatol. 2020;5:16. 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