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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">ldt</journal-id><journal-title-group><journal-title xml:lang="ru">Лучевая диагностика и терапия</journal-title><trans-title-group xml:lang="en"><trans-title>Diagnostic radiology and radiotherapy</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2079-5343</issn><publisher><publisher-name>Baltic Medical Education Center</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.22328/2079-5343-2025-16-4-102-113</article-id><article-id custom-type="elpub" pub-id-type="custom">ldt-1173</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>НАБЛЮДЕНИЕ ИЗ ПРАКТИКИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PRACTICAL CASES</subject></subj-group></article-categories><title-group><article-title>Сложности дифференциальной диагностики интракраниальной солитарной фиброзной опухоли: клинический случай</article-title><trans-title-group xml:lang="en"><trans-title>Difficulties in differential diagnosis of intracranial solitary fibrous tumor: a clinical case</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0008-4843-6838</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Акулов</surname><given-names>М. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Akulov</surname><given-names>M. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Акулов Михаил Михайлович — врач-рентгенолог </p><p>625039, Тюмень, ул. Мельникайте, д. 75 </p></bio><bio xml:lang="en"><p>Mikhai M. Akulov — Radiologist </p><p>625039, Tyumen, Melnikaite St., 75 </p></bio><email xlink:type="simple">akulovmihail@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/0000-0003-3820-2057</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Талыбов</surname><given-names>Р. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Talybov</surname><given-names>R. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Талыбов Рустам Сабирович — врач-рентгенолог, кандидат медицинских наук, ассистент кафедры онкологии с курсом лучевой диагностики и лучевой терапии </p><p>625023, Тюмень, Одесская ул., д. 54 </p></bio><bio xml:lang="en"><p>Rustam S. Talybov —Cand. of Sci. (Med.), Radiologist, assistant of the Department of Oncology with a course of radiation diagnostics and radiation therapy </p><p>Tyumen, Odesskaya St., 54, 625023</p></bio><email xlink:type="simple">rustam230789@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0008-6417-1999</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Клещевникова</surname><given-names>Т. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Kleschevnikova</surname><given-names>T. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Клещевникова Татьяна Михайловна — директор </p><p>625039, Тюмень, ул. Мельникайте, д. 75 </p></bio><bio xml:lang="en"><p>Tatyana M. Kleschevnikova — Head physician </p><p>625039, Tyumen, Melnikaite St., 75 </p></bio><email xlink:type="simple">klshvnkv@yandex.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/0000-0002-0899-0809</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Павлова</surname><given-names>В. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Pavlova</surname><given-names>V. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Павлова Валерия Игоревна — кандидат медицинских наук, доцент, заведующая кафедрой онкологии с курсом лучевой диагностики и лучевой терапии </p><p>625023, Тюмень, Одесская ул., д. 54 </p></bio><bio xml:lang="en"><p>Valeria I. Pavlova — Cand. of Sci. (Med.), Head of the Department of Oncology with a course of radiation diagnostics and radiation therapy </p><p>Tyumen, Odesskaya St., 54, 625023 </p></bio><email xlink:type="simple">pavlova.valeria@mail.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4871-2341</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Трофимова</surname><given-names>Т. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Trofimova</surname><given-names>T. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Трофимова Татьяна Николаевна — доктор медицинских наук, профессор, член-корреспондент Российской академии наук, профессор кафедры рентгенологии и радиационной медицины</p><p>197022, Санкт-Петербург, ул. Льва Толстого, д. 6–8 </p></bio><bio xml:lang="en"><p>Tatyana N. Trofimova — Dr. of Sci. (Med.), Professor, Corresponding Member of the Russian Academy of Sciences, Professor of the radiology department and radiation medicine </p><p>197022, St. Petersburg, L’va Tolstogo St., 6–8 </p></bio><email xlink:type="simple">ttrofimova@groupmmc.ru</email><xref ref-type="aff" rid="aff-4"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Областная клиническая больница № 2</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Regional Clinical Hospital No. 2</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Областная клиническая больница № 2 ; Тюменский государственный медицинский университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Regional Clinical Hospital No. 2 ; Tyumen State Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Областная клиническая больница № 2 ; Многопрофильный клинический медицинский центр «Медицинский город»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Regional Clinical Hospital No. 2 ; Multidisciplinary Clinical Medical Center «Medical City»</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Первый Санкт-Петербургский государственный медицинский университет имени академика И. П. Павлова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Pavlov First St. Petersburg State Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>29</day><month>01</month><year>2026</year></pub-date><volume>16</volume><issue>4</issue><fpage>102</fpage><lpage>113</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Акулов М.М., Талыбов Р.С., Клещевникова Т.М., Павлова В.И., Трофимова Т.Н., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Акулов М.М., Талыбов Р.С., Клещевникова Т.М., Павлова В.И., Трофимова Т.Н.</copyright-holder><copyright-holder xml:lang="en">Akulov M.M., Talybov R.S., Kleschevnikova T.M., Pavlova V.I., Trofimova T.N.</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://radiag.bmoc-spb.ru/jour/article/view/1173">https://radiag.bmoc-spb.ru/jour/article/view/1173</self-uri><abstract><p>Согласно пятой редакции классификации опухолей центральной нервной системы (ЦНС), опубликованной Всемирной организацией здравоохранения (ВОЗ) в 2021 г., солитарная фиброзная опухоль (СФО) определена как самостоятельная нозологическая форма в группе редких мезенхимальных новообразований, демонстрирующая склонность к ранним рецидивам и системной диссеминации. Ограниченная распространенность СФО объясняет скудное количество публикаций, посвященных описанию ее специфических нейровизуализационных паттернов, в то время как клинико-морфологические особенности данной опухоли изучены достаточно детально. Дефицит диагностических критериев обусловливает значительные трудности при проведении дифференциальной диагностики СФО с другими интракраниальными новообразованиями, требующие принципиально иных терапевтических алгоритмов. Представлено клиническое наблюдение пациента 40 лет, предъявлявшего жалобы на цефалгию, системное головокружение, эпизоды синкопальных состояний и генерализованные судорожные приступы в течение двух месяцев. МРТ головного мозга выявила экстрамозговое образование в левой параселлярной области, прилежащее основанием к твердой мозговой оболочке, с перифокальным отеком, масс-эффектом на медиальные отделы левой височной доли, богатой сосудистой сетью, интенсивным и однородным контрастированием, высокими значениями показателей перфузии. На предоперационном этапе дифференциальная диагностика проводилась между менингиомой, шванномой, дуральным метастатическим поражением, хондросаркомой и MALT-лимфомой. Наиболее значимым диагностическим критерием стал феномен «Инь-Ян», проявляющийся гетерогенным сигналом опухоли в режимах Т2- и Т2-FLAIR. Пациенту была проведена микрохирургическая резекция образования. Гистопатологический анализ подтвердил диагноз СФО. Таким образом, применение комплексного мультипараметрического МРТ (мпМРТ) протокола позволяет с высокой вероятностью предположить СФО на дооперационном этапе, что принципиально важно при планирования хирургического вмешательства.</p></abstract><trans-abstract xml:lang="en"><p>According to the 5th edition of the World Health Organization (WHO) Classification of Tumors of the Central Nervous System (CNS), published in 2021, solitary fibrous tumor (SFT) has been established as a distinct nosological entity within the category of rare mesenchymal neoplasms, exhibiting a propensity for early recurrence and systemic dissemination.The limited prevalence of SFTs accounts for the scarcity of publications describing their specific neuroimaging patterns, while the clinicopathological features of this tumor have been well-characterized. The lack of robust diagnostic criteria poses significant challenges in differentiating SFTs from other intracranial neoplasms, which require fundamentally distinct therapeutic approaches. This report describes the clinical case of a 40-year-old male patient presenting with headache, systemic dizziness, recurrent syncopal episodes, and generalized tonic-clonic seizures over a two-month period. Brain MRI revealed an extra-axial mass in the left parasellar region, attached with its base to the dura mater, accompanied by perifocal edema, mass effect of the left temporal lobe, prominent vascularity, intense homogeneous contrast enhancement, and elevated perfusion values. The preoperative differential diagnosis included meningioma, schwannoma, dural metastatic lesion, chondrosarcoma, and MALT lymphoma. The «YinYang» sign emerged as the most significant diagnostic criterion, characterized by heterogeneous tumor signal intensity on T2- and T2-FLAIR sequences. The patient underwent microsurgical resection of the tumor. Histopathological examination confirmed the diagnosis of SFT. Thus, the use of a comprehensive multiparametric MRI protocol enables a high-probability preoperative suspicion of SFT, which is critical for surgical planning.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>солитарная фиброзная опухоль</kwd><kwd>феномен «Инь-Ян»</kwd><kwd>мультипараметрический МРТ протокол</kwd></kwd-group><kwd-group xml:lang="en"><kwd>solitary fibrous tumor</kwd><kwd>yin-yang sign</kwd><kwd>multiparametric MRI mapping</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">Tolstrup J., Loya A., Aggerholm-Pedersen N., Preisler L., Penninga L. Risk factors for recurrent disease after resection of solitary fibrous tumor: a systematic review // Front Surg. 2024. Jan 31. Vol. 11. 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