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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="other" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Bone and soft tissue sarcomas, tumors of the skin</journal-id><journal-title-group><journal-title xml:lang="en">Bone and soft tissue sarcomas, tumors of the skin</journal-title><trans-title-group xml:lang="ru"><trans-title>Саркомы костей, мягких тканей и опухоли кожи</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2219-4614</issn><issn publication-format="electronic">2782-3687</issn><publisher><publisher-name xml:lang="en">Publishing House ABV Press</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">598</article-id><article-id pub-id-type="doi">10.17650/2219-4614-2023-15-1-66-71</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>REAL CLINICAL CASES</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>КЛИНИЧЕСКИЕ СЛУЧАИ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Clinical case of treatment of secondary chondrosarcoma developed due to Ollier disease</article-title><trans-title-group xml:lang="ru"><trans-title>Клинический случай лечения вторичной хондросаркомы кости, развившейся на фоне болезни Олье</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0918-3993</contrib-id><name-alternatives><name xml:lang="en"><surname>Zamilov</surname><given-names>M. M.</given-names></name><name xml:lang="ru"><surname>Замилов</surname><given-names>М. М.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Marat M. Zamilov.</p><p>73/1 Prospekt Oktyabrya, Ufa 450054, Republic of Bashkortostan</p></bio><bio xml:lang="ru"><p>Замилов Марат Мунирович.</p><p>Республика Башкортостан, 450054 Уфа, проспект Октября, 73/1</p></bio><email>zamartin@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3734-2779</contrib-id><name-alternatives><name xml:lang="en"><surname>Menshikov</surname><given-names>K. V.</given-names></name><name xml:lang="ru"><surname>Меньшиков</surname><given-names>К. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>73/1 Prospekt Oktyabrya, Ufa 450054, Republic of Bashkortostan; 3 Lenin St., Ufa 450008, Republic of Bashkortostan</p></bio><bio xml:lang="ru"><p>Республика Башкортостан, 450054 Уфа, проспект Октября, 73/1; Республика Башкортостан, 450008 Уфа, ул. Ленина, 3</p></bio><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1185-977X</contrib-id><name-alternatives><name xml:lang="en"><surname>Musin</surname><given-names>Sh. I.</given-names></name><name xml:lang="ru"><surname>Мусин</surname><given-names>Ш. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>73/1 Prospekt Oktyabrya, Ufa 450054, Republic of Bashkortostan; 3 Lenin St., Ufa 450008, Republic of Bashkortostan</p></bio><bio xml:lang="ru"><p>Республика Башкортостан, 450054 Уфа, проспект Октября, 73/1; Республика Башкортостан, 450008 Уфа, ул. Ленина, 3</p></bio><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0996-5995</contrib-id><name-alternatives><name xml:lang="en"><surname>Sultanbayev</surname><given-names>A. V.</given-names></name><name xml:lang="ru"><surname>Султанбаев</surname><given-names>А. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>73/1 Prospekt Oktyabrya, Ufa 450054, Republic of Bashkortostan</p></bio><bio xml:lang="ru"><p>Республика Башкортостан, 450054 Уфа, проспект Октября, 73/1</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8334-4639</contrib-id><name-alternatives><name xml:lang="en"><surname>Sharifgaliev</surname><given-names>I. A.</given-names></name><name xml:lang="ru"><surname>Шарифгалиев</surname><given-names>И. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>73/1 Prospekt Oktyabrya, Ufa 450054, Republic of Bashkortostan; 3 Lenin St., Ufa 450008, Republic of Bashkortostan</p></bio><bio xml:lang="ru"><p>Республика Башкортостан, 450054 Уфа, проспект Октября, 73/1; Республика Башкортостан, 450008 Уфа, ул. Ленина, 3</p></bio><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4639-962X</contrib-id><name-alternatives><name xml:lang="en"><surname>Osokin</surname><given-names>S. V.</given-names></name><name xml:lang="ru"><surname>Осокин</surname><given-names>С. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>73/1 Prospekt Oktyabrya, Ufa 450054, Republic of Bashkortostan</p></bio><bio xml:lang="ru"><p>Республика Башкортостан, 450054 Уфа, проспект Октября, 73/1</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8779-4074</contrib-id><name-alternatives><name xml:lang="en"><surname>Chalov</surname><given-names>V. S.</given-names></name><name xml:lang="ru"><surname>Чалов</surname><given-names>В. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>73/1 Prospekt Oktyabrya, Ufa 450054, Republic of Bashkortostan</p></bio><bio xml:lang="ru"><p>Республика Башкортостан, 450054 Уфа, проспект Октября, 73/1</p></bio><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Republican Clinical Oncological Dispensary, Ministry of Health of Republic of Bashkortostan</institution></aff><aff><institution xml:lang="ru">ГАУЗ «Республиканский клинический онкологический диспансер» Минздрава Республики Башкортостан</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Bashkir State Medical University, Ministry of Health of Russia</institution></aff><aff><institution xml:lang="ru">ФГБОУ ВО «Башкирский государственный медицинский университет» Минздрава России</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2023-04-23" publication-format="electronic"><day>23</day><month>04</month><year>2023</year></pub-date><volume>15</volume><issue>1</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>66</fpage><lpage>71</lpage><history><date date-type="received" iso-8601-date="2023-02-03"><day>03</day><month>02</month><year>2023</year></date><date date-type="accepted" iso-8601-date="2023-04-23"><day>23</day><month>04</month><year>2023</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2023, Zamilov M.M., Menshikov K.V., Musin S.I., Sultanbayev A.V., Sharifgaliev I.A., Osokin S.V., Chalov V.S.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2023, Замилов М.М., Меньшиков К.В., Мусин Ш.И., Султанбаев А.В., Шарифгалиев И.А., Осокин С.В., Чалов В.С.</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="en">Zamilov M.M., Menshikov K.V., Musin S.I., Sultanbayev A.V., Sharifgaliev I.A., Osokin S.V., Chalov V.S.</copyright-holder><copyright-holder xml:lang="ru">Замилов М.М., Меньшиков К.В., Мусин Ш.И., Султанбаев А.В., Шарифгалиев И.А., Осокин С.В., Чалов В.С.</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://sarbon.abvpress.ru/jour/article/view/598">https://sarbon.abvpress.ru/jour/article/view/598</self-uri><abstract xml:lang="en"><p>Ollier disease is a rare non-hereditary disorder of the bone tissue characterized by development of multiple benign bone tumors – enchondromas. One of the dangerous complications of this pathology is tumor transition into chondrosarcoma. Currently, there are no drug therapies for Ollier disease. Surgical treatment is performed in case of complications (chondrosarcoma, pathological fracture).</p><p>The article presents a clinical case of chondrosarcoma treatment  in a 42-year-old male with Ollier disease diagnosed when the patient was 8 years old. Since 2021, the patient noted intensive tumor growth on the right foot and left calf. In August of 2022, the patient sought medical help at the Republican Clinical Oncological Dispensary of the Bashkortostan Ministry of Health. Examination showed synchronous malignant transformation of enchondromas of the right foot and left calf confirmed by histological exam. Due to tumor advancement, surgical treatment  was performed. Other enchondroma lesions are being watched.</p></abstract><trans-abstract xml:lang="ru"><p>Болезнь Олье представляет собой редкое ненаследственное заболевание костной ткани, характеризующееся появлением множественных доброкачественных опухолей костей – энхондром. Одним из грозных осложнений данной патологии является перерождение опухоли в хондросаркому. На сегодняшний день не существует медикаментозного лечения болезни Олье. Хирургическое вмешательство проводится при ее осложнениях (хондросаркоме, патологическом переломе).</p><p>В статье представлен клинический случай лечения хондросаркомы у мужчины 42 лет, развившейся на фоне болезни Олье, которая была выявлена у пациента в возрасте 8 лет. С 2021 г. он отмечает интенсивный рост опухоли правой стопы и левой голени. В августе  2022 г. пациент обратился в Республиканский клинический онкологический диспансер Минздрава Республики Башкортостан. По данным обследования  установлена синхронная малигнизация энхондром правой стопы и левой голени, что подтверждено гистологическим исследованием. С учетом распространенности опухоли проведено хирургическое лечение. Продолжается наблюдение за другими очагами энхондром.</p></trans-abstract><kwd-group xml:lang="en"><kwd>Ollier disease</kwd><kwd>enchondromatosis</kwd><kwd>chondrosarcoma</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>болезнь Олье</kwd><kwd>энхондроматоз</kwd><kwd>хондросаркома</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Silve C., Juppner H. Ollier disease. Orphanet J Rare Dis 2006;1:37. DOI: 10.1186/1750-1172-1-37</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Amary M.F., Damato S., Halai D. et al. Ollier disease and Maffucci syndrome are caused by somatic mosaic mutations of IDH1 and IDH2. 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