<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE root>
<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">Pediatric Hematology/Oncology and Immunopathology</journal-id><journal-title-group><journal-title xml:lang="en">Pediatric Hematology/Oncology and Immunopathology</journal-title><trans-title-group xml:lang="ru"><trans-title>Вопросы гематологии/онкологии и иммунопатологии в педиатрии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1726-1708</issn><issn publication-format="electronic">2414-9314</issn><publisher><publisher-name xml:lang="en">Fund Doctors, Innovations, Science for Children</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">1003</article-id><article-id pub-id-type="doi">10.24287/j.1003</article-id><article-id pub-id-type="edn">MCRASE</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">Myoepithelial carcinoma of bones and soft tissues in children: a single-center experience</article-title><trans-title-group xml:lang="ru"><trans-title>Миоэпителиальная карцинома костей и мягких тканей у детей: опыт одного Центра</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0004-8970-2267</contrib-id><name-alternatives><name xml:lang="en"><surname>Shestyuk</surname><given-names>Valeriya O.</given-names></name><name xml:lang="ru"><surname>Шестюк</surname><given-names>Валерия Олеговна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>a pediatric oncologist at the Department of Adolescent Oncology and Hematology </p></bio><bio xml:lang="ru"><p>врач-детский онколог отделения онкологии и гематологии старшего возраста</p></bio><email>valeriya.shestyuk.99@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6848-8714</contrib-id><name-alternatives><name xml:lang="en"><surname>Konopleva</surname><given-names>E. I.</given-names></name><name xml:lang="ru"><surname>Коноплева</surname><given-names>Е. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>valeriya.shestyuk.99@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8578-6572</contrib-id><name-alternatives><name xml:lang="en"><surname>Sidorov</surname><given-names>I. V.</given-names></name><name xml:lang="ru"><surname>Сидоров</surname><given-names>И. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>valeriya.shestyuk.99@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1661-4205</contrib-id><name-alternatives><name xml:lang="en"><surname>Sinichenkova</surname><given-names>K. Yu.</given-names></name><name xml:lang="ru"><surname>Синиченкова</surname><given-names>К. Ю.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>valeriya.shestyuk.99@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5354-7067</contrib-id><name-alternatives><name xml:lang="en"><surname>Sharlai</surname><given-names>A. S.</given-names></name><name xml:lang="ru"><surname>Шарлай</surname><given-names>А. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>valeriya.shestyuk.99@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8580-3499</contrib-id><name-alternatives><name xml:lang="en"><surname>Panferova</surname><given-names>A. V.</given-names></name><name xml:lang="ru"><surname>Панферова</surname><given-names>А. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>valeriya.shestyuk.99@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6208-6557</contrib-id><name-alternatives><name xml:lang="en"><surname>Gegeliya</surname><given-names>N. V.</given-names></name><name xml:lang="ru"><surname>Гегелия</surname><given-names>Н. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>valeriya.shestyuk.99@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9179-8430</contrib-id><name-alternatives><name xml:lang="en"><surname>Abasov</surname><given-names>R. Kh.</given-names></name><name xml:lang="ru"><surname>Абасов</surname><given-names>Р. Х.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>valeriya.shestyuk.99@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0005-1303-567X</contrib-id><name-alternatives><name xml:lang="en"><surname>Strozhenkov</surname><given-names>M. M.</given-names></name><name xml:lang="ru"><surname>Строженков</surname><given-names>М. М.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>valeriya.shestyuk.99@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2210-6431</contrib-id><name-alternatives><name xml:lang="en"><surname>Artemov</surname><given-names>A. Yu.</given-names></name><name xml:lang="ru"><surname>Артёмов</surname><given-names>А. Ю.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>valeriya.shestyuk.99@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6313-6712</contrib-id><name-alternatives><name xml:lang="en"><surname>Bolshakov</surname><given-names>N. A.</given-names></name><name xml:lang="ru"><surname>Большаков</surname><given-names>Н. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>valeriya.shestyuk.99@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4042-0125</contrib-id><name-alternatives><name xml:lang="en"><surname>Teleshova</surname><given-names>M. V.</given-names></name><name xml:lang="ru"><surname>Телешова</surname><given-names>М. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>valeriya.shestyuk.99@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1308-8622</contrib-id><name-alternatives><name xml:lang="en"><surname>Druy</surname><given-names>A. E.</given-names></name><name xml:lang="ru"><surname>Друй</surname><given-names>А. Е.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>valeriya.shestyuk.99@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3704-8783</contrib-id><name-alternatives><name xml:lang="en"><surname>Kachanov</surname><given-names>D. Yu.</given-names></name><name xml:lang="ru"><surname>Качанов</surname><given-names>Д. Ю.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>valeriya.shestyuk.99@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9300-198X</contrib-id><name-alternatives><name xml:lang="en"><surname>Karachunskiy</surname><given-names>A. I.</given-names></name><name xml:lang="ru"><surname>Карачунский</surname><given-names>А. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>valeriya.shestyuk.99@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">The Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology of Ministry of Health of the Russian Federation</institution></aff><aff><institution xml:lang="ru">ФГБУ «Национальный медицинский исследовательский центр детской гематологии, онкологии и иммунологии им. Дмитрия Рогачева» Минздрава России</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2026-08-19" publication-format="electronic"><day>19</day><month>08</month><year>2026</year></pub-date><volume>25</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>34</fpage><lpage>44</lpage><history><date date-type="received" iso-8601-date="2025-08-22"><day>22</day><month>08</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-10-09"><day>09</day><month>10</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2026, «D. Rogachev NMRCPHOI»</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2026, ФГБУ «НМИЦ ДГОИ им. Дмитрия Рогачева» Минздрава России</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="en">«D. Rogachev NMRCPHOI»</copyright-holder><copyright-holder xml:lang="ru">ФГБУ «НМИЦ ДГОИ им. Дмитрия Рогачева» Минздрава России</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/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://hemoncim.com/jour/article/view/1003">https://hemoncim.com/jour/article/view/1003</self-uri><abstract xml:lang="en"><p><bold>Introduction.</bold> Myoepithelial сarcinoma (MC) is a rare and highly malignant neoplasm. Primary soft tissue involvement predominates in pediatrics (MCST), while MC of bones has been described in isolated cases. The rarity of MC combined with its polymorphic phenotype significantly challenge diagnosis and determine the absence of standardized treatment approaches.</p> <p><bold>Aim:</bold> to analyze the specifics of diagnosis and treatment of children with MC at the Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology of Ministry of Health of the Russian Federation.</p> <p><bold>Material and methods.</bold> The study included 7 patients aged 1.3 to 14.2 years who were diagnosed with MC and registered between 2017 and 2024.</p> <p><bold>Results and discussion.</bold> MC of soft tissue was diagnosed in 6/7 cases and MC of bones in 1/7. Five out of seven cases were localized, while 2/7 cases presented with distant metastases. In 3 cases a deletion of the <italic>SMARCB1</italic> gene was identified, and in 1 case deletion of the <italic>EWSR1</italic> gene was detected. Surgical resection proved to be the cornerstone of the treatment program for patients with MC (R0 –<italic> n</italic> = 3; R1 – <italic>n</italic> = 3; R2 – <italic>n</italic> = 1). 5 patients underwent external beam radiation therapy. In 4 cases of localized MC, courses of chemotherapy (ICpE) were administered as an adjuvant. In 1 case courses of ICpE and IVE were given perioperatively. In the first case of metastatic MCST courses of ICpE/IVE were also administered; and in the second case a combination of AP + vinorelbine was used. Follow-up outcomes: 4/7 patients are alive with 3/4 alive without events.</p> <p><bold>Conclusion.</bold> The results of our study mostly align with international experience and emphasize the significance of local control, as well as the leading role of a multidisciplinary approach and multicenter data sharing in improving the diagnostic and therapeutic outcomes for patients with MC.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Введение.</bold> Миоэпителиальная карцинома (МК) – редкое злокачественное новообразование с агрессивным биологическим поведением. В педиатрической практике преобладает первичное поражение мягких тканей, в то время как поражение костей описано в единичных случаях. Низкая частота встречаемости и полиморфная гистологическая картина опухоли в значительной степени затрудняют своевременную постановку диагноза, а также обусловливают отсутствие единых подходов в лечении МК.</p> <p><bold>Цель исследования</bold> – выполнить анализ особенностей диагностики и лечения детей с МК в условиях НМИЦ ДГОИ им. Дмитрия Рогачева.</p> <p><bold>Материалы и методы.</bold> В период с 2017 по 2024 г. были зарегистрированы 7 пациентов в возрасте от 1,3 до 14,2 года, страдающих МК различной локализации.</p> <p><bold>Результаты и обсуждение.</bold><bold> </bold>В 6/7 случаях диагностирована МК мягких тканей, в 1/7 – МК костей. Локализованный характер наблюдался в 5/7 случаях, у 2 пациентов инициально зафиксированы отдаленные метастазы. В 3 случаях выявлена делеция гена <italic>SMARCB</italic><italic>1</italic>, в 1 – делеция гена <italic>EWSR</italic><italic>1</italic>. Ключевая роль в программе лечения пациентов с МК отводилась резекции (R0 – <italic>n</italic> = 3, R1 – <italic>n</italic> = 3, R2 – <italic>n</italic> = 1). Дистанционная лучевая терапия проведена 5 пациентам. В 4 случаях локализованной МК в адъювантном режиме проведены курсы полихимиотерапии в режиме IСpE, в 1 случае – курсы ICpE и IVE периоперационно. В одном случае метастатической МК мягких тканей также применялась полихимиотерапия по схемам ICpE/IVE, во втором случае – комбинация АР + винорелбин. Живы 4/7 пациента, из них 3 – без событий.</p> <p><bold>Заключение.</bold> Результаты, полученные в нашем исследовании, во многом согласуются с мировым опытом и подчеркивают высокое значение локального контроля, а также ведущую роль междисциплинарного подхода и мультицентрового объединения данных в контексте улучшения результатов диагностики и терапии пациентов с МК.</p></trans-abstract><kwd-group xml:lang="en"><kwd>myoepithelial carcinoma</kwd><kwd>rare tumors</kwd><kwd>children</kwd><kwd>surgery</kwd><kwd>radiation therapy</kwd><kwd>multi-agent chemotherapy</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>миоэпителиальная карцинома</kwd><kwd>редкие опухоли</kwd><kwd>дети</kwd><kwd>хирургия</kwd><kwd>лучевая терапия</kwd><kwd>полихимиотерапия</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>The WHO Classification of Tumours Editorial Board. WHO Classification of Paediatric Tumours, <math><msup><mn>5</mn><mi>th</mi></msup></math> ed. Lyon: IARC Press, 2023.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Miccio J.A., Oladeru O.T., Yang J., Xue Y., Hoda S.T., Ryu S. et al. Myoepithelial carcinoma: the role of radiation therapy. a case report and analysis of data from the surveillance, epidemiology, and end results (SEER) registry. J Pediatr Hematol Oncol 2016;38(4):274–8. DOI: 10.1097/MPH.0000000000000508</mixed-citation></ref><ref id="B3"><label>3.</label><mixed-citation>Fletcher C.D. Recently characterized soft tissue tumors that bring biologic insight. Mod Pathol 2014;27 Suppl 1:S98–112. DOI: 10.1038/modpathol.2013.172</mixed-citation></ref><ref id="B4"><label>4.</label><mixed-citation>Le Loarer F., Zhang L., Fletcher C.D., Ribeiro A., Singer S., Italiano A. et al. Consistent SMARCB1 homozygous deletions in epithelioid sarcoma and in a subset of myoepithelial carcinomas can be reliably detected by FISH in archival material. Genes Chromosomes Cancer 2014;53(6):475–86. DOI: 10.1002/gcc.22159</mixed-citation></ref><ref id="B5"><label>5.</label><mixed-citation>Hornick J.L., Fletcher C.D. Myoepithelial tumors of soft tissue: a clinicopathologic and immunohistochemical study of 101 cases with evaluation of prognostic parameters. Am J Surg Pathol 2003;27(9):1183–96. DOI: 10.1097/00000478-200309000-00001</mixed-citation></ref><ref id="B6"><label>6.</label><mixed-citation>Aiba H., Errani C., Ciani G., Gambarotti M., Righi A., Maioli M. et al. Myoepithelial carcinoma of soft tissues and bone. Eur J Cancer 2023;194:113353. DOI: 10.1016/j.ejca.2023.113353</mixed-citation></ref><ref id="B7"><label>7.</label><mixed-citation>Bisogno G., Tagarelli A., Schiavetti A., Scarzello G., Ferrari A., Cecchetto G., Alaggio R. Myoepithelial carcinoma treatment in children: a report from the TREP project. Pediatr Blood Cancer 2014;61(4):643–6. DOI: 10.1002/pbc.24818</mixed-citation></ref><ref id="B8"><label>8.</label><mixed-citation>Koscielniak E., Klingebiel T. CWS-guidance for risk adapted treatment of soft tissue sarcoma (STS) and soft tissue tumours in children, adolescents, and young adults. [Electronic resource] URL: https:// www.kinderkrebsinfo.de/health_professionals/clinical_trials/ pohkinderkrebsinfotherapiestudien/ cws_guidance/ index_eng.html (accessed 21.05.2024).</mixed-citation></ref><ref id="B9"><label>9.</label><mixed-citation>Amin M.B., Edge S.B., Greene F.L. AJCC TNM Staging System <math><msup><mn>8</mn><mi>th</mi></msup></math> Ed. New York: Springer, 2017.</mixed-citation></ref><ref id="B10"><label>10.</label><mixed-citation>Gleason B.C., Fletcher C.D. Myoepithelial carcinoma of soft tissue in children: an aggressive neoplasm analyzed in a series of 29 cases. Am J Surg Pathol 2007;31(12):1813–24. DOI: 10.1097/PAS.0b013e31805f6775</mixed-citation></ref><ref id="B11"><label>11.</label><mixed-citation>Huang S.C., Zhang L., Sung Y.S., Chen C.-L., Kao Y.-C., Agaram N.P., Antonescu C.R. et al. Secondary EWSR1 gene abnormalities in SMARCB1-deficient tumors with 22q11–12 regional deletions: potential pitfalls in interpreting EWSR1 FISH results. Genes Chromosomes Cancer 2016;55(10):767–76. DOI: 10.1002/gcc.22376</mixed-citation></ref><ref id="B12"><label>12.</label><mixed-citation>Antonescu C.R., Zhang L., Chang N.E., Pawel B.R., Travis W., Katabi N. et al. EWSR1-POU5F1 fusion in soft tissue myoepithelial tumors. A molecular analysis of sixty-six cases, including soft tissue, bone, and visceral lesions, showing common involvement of the EWSR1 gene. Genes Chromosomes Cancer 2010;49(12):1114–24. DOI: 10.1002/gcc.20819</mixed-citation></ref><ref id="B13"><label>13.</label><mixed-citation>Suurmeijer A.J.H., Dickson B.C., Swanson D., Zhang L., Sung Y.-S., Fletcher C.D., Antonescu C.R. A morphologic and molecular reappraisal of myoepithelial tumors of soft tissue, bone, and viscera with EWSR1 and FUS gene rearrangements. Genes Chromosomes Cancer 2020;59(6):348–56. DOI: 10.1002/gcc.22835</mixed-citation></ref><ref id="B14"><label>14.</label><mixed-citation>Ashcroft C.R., Penney S.W., Whiteway S.L. Treatment refractory soft tissue myoepithelial carcinoma with an ARID1A mutation. J Pediatr Hematol Oncol 2023;45(4):539–42. DOI: 10.1097/MPH.0000000000002650</mixed-citation></ref><ref id="B15"><label>15.</label><mixed-citation>Dreyfuss A.I., Clark J.R., Fallon B.G., Posner M.R., Norris C.M. Jr, Miller D. Cyclophosphamide, doxorubicin, and cisplatin combination chemotherapy for advanced carcinomas of salivary gland origin. Cancer 1987;60(12):2869–72. DOI: 10.1002/1097-0142(19871215)60:12&lt;2869::aidcncr2820601203&gt;3.0.co;2-y</mixed-citation></ref><ref id="B16"><label>16.</label><mixed-citation>Airoldi M., Pedani F., Succo G., Gabriele A.M., Ragona R., Marchionatti S., Bumma C. et al. Phase II randomized trial comparing vinorelbine versus vinorelbine plus cisplatin in patients with recurrent salivary gland malignancies. Cancer 2001;91(3):541–7. DOI: 10.1002/1097-0142(20010201) 91:3&lt;541::aid-cncr1032&gt;3.0.co;2-y</mixed-citation></ref><ref id="B17"><label>17.</label><mixed-citation>Laurie S.A., Siu L.L., Winquist E., Maksymiuk A., Harnett E.L., Walsh W. et al. A phase 2 study of platinum and gemcitabine in patients with advanced salivary gland cancer: a trial of the NCIC Clinical Trials Group. Cancer 2010;116(2):362–8. DOI: 10.1002/cncr.24745</mixed-citation></ref><ref id="B18"><label>18.</label><mixed-citation>Nakano K., Sato Y., Sasaki T., Shimbashi W., Fukushima H., Yonekawa H. et al. Combination chemotherapy of carboplatin and paclitaxel for advanced/metastatic salivary gland carcinoma patients: differences in responses by different pathological diagnoses. Acta Otolaryngol 2016;136(9):948–51. DOI: 10.3109/00016489.2016.1170876</mixed-citation></ref><ref id="B19"><label>19.</label><mixed-citation>Giridhar P., Gupta P., Mallick S., Upadhyay A.D., Rath G.K. Impact of adjuvant therapy on survival in patients with myoepithelial carcinoma: a systematic review and individual patient data analysis of 691 patients. Radiother Oncol 2019;140:125–30. DOI: 10.1016/j.radonc.2019.06.017</mixed-citation></ref><ref id="B20"><label>20.</label><mixed-citation>Kabarriti R., Quinn T.J., Ewart M.R., Mehta K.J., Lomita C., Geller D.S. et al. Neoadjuvant radiation therapy for the management of myoepithelial carcinoma of the upper extremity. Int J Cancer 2018;142(4):854–62. DOI: 10.1002/ijc.31101</mixed-citation></ref></ref-list></back></article>
