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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">Head and Neck Tumors</journal-id><journal-title-group><journal-title xml:lang="en">Head and Neck Tumors</journal-title><trans-title-group xml:lang="ru"><trans-title>Опухоли головы и шеи</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2222-1468</issn><issn publication-format="electronic">2411-4634</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">918</article-id><article-id pub-id-type="doi">10.17650/2222-1468-2023-13-3-89-97</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>CLINICAL CASE</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>КЛИНИЧЕСКИЙ СЛУЧАЙ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Treatment strategies of recurrent jaw osteosarcoma: case report</article-title><trans-title-group xml:lang="ru"><trans-title>Тактика лечения при рецидивах остеосаркомы нижней челюсти: клинический случай</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2283-1812</contrib-id><name-alternatives><name xml:lang="en"><surname>Saprina</surname><given-names>O. A.</given-names></name><name xml:lang="ru"><surname>Саприна</surname><given-names>О. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><bold>Oksana A. Saprina </bold></p><p><italic>24 Kashirskoye Shosse, Moscow 115522</italic></p></bio><bio xml:lang="ru"><p><bold>Оксана Александровна Саприна </bold></p><p><italic>115522 Москва, Каширское шоссе, 24</italic></p></bio><email>isabekian@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9132-3416</contrib-id><name-alternatives><name xml:lang="en"><surname>Kropotov</surname><given-names>M. A.</given-names></name><name xml:lang="ru"><surname>Кропотов</surname><given-names>М. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>24 Kashirskoye Shosse, Moscow 115522</italic></p></bio><bio xml:lang="ru"><p><italic>115522 Москва, Каширское шоссе, 24</italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3275-2886</contrib-id><name-alternatives><name xml:lang="en"><surname>Vyzhigina</surname><given-names>B. B.</given-names></name><name xml:lang="ru"><surname>Выжигина</surname><given-names>Б. Б.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>24 Kashirskoye Shosse, Moscow 115522</italic></p></bio><bio xml:lang="ru"><p><italic>115522 Москва, Каширское шоссе, 24</italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4944-2507</contrib-id><name-alternatives><name xml:lang="en"><surname>Ganina</surname><given-names>K. А.</given-names></name><name xml:lang="ru"><surname>Ганина</surname><given-names>К. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>24 Kashirskoye Shosse, Moscow 115522</italic></p></bio><bio xml:lang="ru"><p><italic>115522 Москва, Каширское шоссе, 24</italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">N.N. Blokhin National Medical Russian Research Center of Oncology, Ministry of Health of Russia</institution></aff><aff><institution xml:lang="ru">ФГБУ «Национальный медицинский исследовательский центр онкологии им. Н.Н. Блохина» Минздрава России</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2023-12-12" publication-format="electronic"><day>12</day><month>12</month><year>2023</year></pub-date><volume>13</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>89</fpage><lpage>97</lpage><history><date date-type="received" iso-8601-date="2023-12-11"><day>11</day><month>12</month><year>2023</year></date><date date-type="accepted" iso-8601-date="2023-12-11"><day>11</day><month>12</month><year>2023</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2023, Saprina O.A., Kropotov M.A., Vyzhigina B.B., Ganina K.А.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2023, Саприна О.А., Кропотов М.А., Выжигина Б.Б., Ганина К.А.</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="en">Saprina O.A., Kropotov M.A., Vyzhigina B.B., Ganina K.А.</copyright-holder><copyright-holder xml:lang="ru">Саприна О.А., Кропотов М.А., Выжигина Б.Б., Ганина К.А.</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://ogsh.abvpress.ru/jour/article/view/918">https://ogsh.abvpress.ru/jour/article/view/918</self-uri><abstract xml:lang="en"><p>Osteosarcoma of jaw is a rare malignant neoplasm of the maxillofacial region. Morphologically and radiologically identical to trunk and extremities sarcomas, but clinical features and prognosis of the disease have important differences. The strategy in treatment of gnathic sarcomas extrapolated from peripheral sarcomas, and represents an integrated multidisciplinary approach. The role of neoadjuvant chemotherapy remains controversial as well as adjuvant chemotherapy due to lack of clinical research. Surgical treatment with achievement of clean resection margins is the main favorable prognostic factor. Fibular free flap has been widely used for the last decade for mandible reconstruction. The strategies of treatment recurrent disease directly depend on ability to perform complete resection. Despite increased technical complexity, secondary free peroneal flap reconstruction can be performed safely, reliably, and with similar results to the premier segmental mandibulectomy. The use of radiation therapy is limited to unresectable or recurrent lesions. Well known that jaw osteosarcomas have a relatively higher survival rate and low metastasis rate, however, local recurrences significantly worsen the prognosis of patients. The following is a clinical case of treatment recurrent jaw osteosarcoma using second fibular free flap.</p></abstract><trans-abstract xml:lang="ru"><p>Остеосаркома нижней челюсти является редкой злокачественной опухолью органов головы и шеи. морфологически и рентгенологически саркомы челюстей идентичны саркомам туловища и конечностей, но отличаются от них течением и прогнозом заболевания. стратегия лечения гнатических сарком аналогична терапии периферических сарком и представляет собой комплексный мультидисциплинарный подход. Роль неоадъювантной химиотерапии остается спорной, так же как и адъювантной, в связи с недостаточным количеством научных работ. хирургическое лечение с достижением чистых краев резекции является основным благоприятным прогностическим фактором. Для реконструкции нижней челюсти в последнее десятилетие широко используется реваскуляризированный малоберцовый аутотрансплантат. тактика лечения при рецидивах сарком напрямую зависит от возможности радикального удаления опухоли. Несмотря на повышенную техническую сложность, реконструкция вторым свободным малоберцовым лоскутом может быть выполнена безопасно, надежно и дать результаты, аналогичные результатам исходной реконструкции. применение лучевой терапии ограничено нерезектабельными или рецидивирующими поражениями. Известно, что для сарком нижней челюсти характерны высокие показатели выживаемости и низкая частота метастазирования, однако локальные рецидивы значительно ухудшают прогноз пациентов. В статье представлен клинический случай лечения рецидивирующей остеосаркомы нижней челюсти с использованием второго малоберцового аутотрансплантата.</p></trans-abstract><kwd-group xml:lang="en"><kwd>osteosarcoma of the mandible</kwd><kwd>bone sarcoma</kwd><kwd>free fibular flap</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>остеосаркома нижней челюсти</kwd><kwd>саркомы костей</kwd><kwd>свободный малоберцовый лоскут</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Baumhoer D. Bone-related lesions of the jaws Surg Pathol Clin 2017;10(3):693–704. DOI: 10.1016/j.path.2017.04.007</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Paparella M.L., Olvi L.G., Brandizzi D. et al. Osteosarcoma of the jaw: an analysis of a series of 74 cases. Histopathology 2013;63(4):551–7. 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