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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">Surgery and Oncology</journal-id><journal-title-group><journal-title xml:lang="en">Surgery and Oncology</journal-title><trans-title-group xml:lang="ru"><trans-title>Хирургия и онкология</trans-title></trans-title-group></journal-title-group><issn publication-format="electronic">2949-5857</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">659</article-id><article-id pub-id-type="doi">10.17650/2949-5857-2023-13-4-62-67</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>CASE REPORT</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>КЛИНИЧЕСКОЕ НАБЛЮДЕНИЕ</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 surgical treatment of a malignant tumor from the sheaths of peripheral nerves of retroperitoneal localization</article-title><trans-title-group xml:lang="ru"><trans-title>Клинический случай хирургического лечения злокачественной опухоли из оболочек периферических нервов забрюшинной локализации</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Atakhanova</surname><given-names>N. E.</given-names></name><name xml:lang="ru"><surname>Атаханова</surname><given-names>Н. Э.</given-names></name></name-alternatives><address><country country="UZ">Uzbekistan</country></address><bio xml:lang="en"><p>1 Farobius St., Tashkent 100109</p></bio><bio xml:lang="ru"><p>100109 Ташкент, ул. Фаробий, 1</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Tursunova</surname><given-names>N. I.</given-names></name><name xml:lang="ru"><surname>Турсунова</surname><given-names>Н. И.</given-names></name></name-alternatives><address><country country="UZ">Uzbekistan</country></address><bio xml:lang="en"><p>Nodira Isroilovna Tursunova</p><p>1 Farobius St., Tashkent 100109</p></bio><bio xml:lang="ru"><p>Нодира Исроиловна Турсунова</p><p>100109 Ташкент, ул. Фаробий, 1</p></bio><email>Dr.nik8888@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Yahyaeva</surname><given-names>V. K.</given-names></name><name xml:lang="ru"><surname>Яхяева</surname><given-names>В. К.</given-names></name></name-alternatives><address><country country="UZ">Uzbekistan</country></address><bio xml:lang="en"><p>1 Bogiston St., Tashkent 100070</p></bio><bio xml:lang="ru"><p>100070 Ташкент, ул. Богистон, 1</p></bio><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Esonturdiev</surname><given-names>U. I.</given-names></name><name xml:lang="ru"><surname>Эсонтурдиев</surname><given-names>У. И.</given-names></name></name-alternatives><address><country country="UZ">Uzbekistan</country></address><bio xml:lang="en"><p>1 Bogiston St., Tashkent 100070</p></bio><bio xml:lang="ru"><p>100070 Ташкент, ул. Богистон, 1</p></bio><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Mamazhanov</surname><given-names>Kh. I.</given-names></name><name xml:lang="ru"><surname>Мамажанов</surname><given-names>Х. И.</given-names></name></name-alternatives><address><country country="UZ">Uzbekistan</country></address><bio xml:lang="en"><p>1 Farobius St., Tashkent 100109</p></bio><bio xml:lang="ru"><p>100109 Ташкент, ул. Фаробий, 1</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Almuradova</surname><given-names>D. M.</given-names></name><name xml:lang="ru"><surname>Алмурадова</surname><given-names>Д. М.</given-names></name></name-alternatives><address><country country="UZ">Uzbekistan</country></address><bio xml:lang="en"><p>1 Farobius St., Tashkent 100109</p></bio><bio xml:lang="ru"><p>100109 Ташкент, ул. Фаробий, 1</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Botiralieva</surname><given-names>G. K.</given-names></name><name xml:lang="ru"><surname>Ботиралиева</surname><given-names>Г. К.</given-names></name></name-alternatives><address><country country="UZ">Uzbekistan</country></address><bio xml:lang="en"><p>1 Bogiston St., Tashkent 100070</p></bio><bio xml:lang="ru"><p>100070 Ташкент, ул. Богистон, 1</p></bio><xref ref-type="aff" rid="aff3"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Tashkent Medical Academy</institution></aff><aff><institution xml:lang="ru">Ташкентская медицинская академия</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Tashkent city branch of the Republican Specialized Scientific and Practical Medical Center of Oncology and Radiology</institution></aff><aff><institution xml:lang="ru">Ташкентский городской филиал Республиканского специализированного научно-практического медицинского центра онкологии и радиологии</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Public-private partner LLC “IPSUM PATHOLOGY”</institution></aff><aff><institution xml:lang="ru">Государственно-частный партнер ООО «IPSUM PATHOLOGY»</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2024-01-08" publication-format="electronic"><day>08</day><month>01</month><year>2024</year></pub-date><volume>13</volume><issue>4</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>62</fpage><lpage>67</lpage><history><date date-type="received" iso-8601-date="2024-01-08"><day>08</day><month>01</month><year>2024</year></date><date date-type="accepted" iso-8601-date="2024-01-08"><day>08</day><month>01</month><year>2024</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2024, ABV-press</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2024, АБВ-пресс</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="en">ABV-press</copyright-holder><copyright-holder xml:lang="ru">АБВ-пресс</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://onco-surgery.info/jour/about/editorialPolicies</ali:license_ref></license></permissions><self-uri xlink:href="https://onco-surgery.info/jour/article/view/659">https://onco-surgery.info/jour/article/view/659</self-uri><abstract xml:lang="en"><p><bold>Clinical case.</bold> The article presents a clinical case of malignant retroperitoneal schwannoma, which was a diagnostic finding. The clinical picture of the disease was dominated by pain in the lower abdomen and lower back, frequent urination. After a diagnostic examination and preliminary preparation, the patient was operated on in a hospital at the oncogynecology department of the Tashkent City branch of the Republican Specialized Scientific and practical Medical Center of Oncology and Radiology with a preliminary diagnosis of an ovarian tumor. Interrooperatively, a tumor of the retroperitoneal space with lesions of the obturator nerve was revealed. Subsequently, immunohistochemical analysis clarified the histological type of the tumor, which turned out to be a malignant schwannoma of the retroperitoneal space.</p><p><bold>Conclusion.</bold> These data may help in the management of patients with this pathology and improve the diagnosis of patients with small pelvic tumors.</p></abstract><trans-abstract xml:lang="ru"><p>В статье представлен клинический случай злокачественной шванномы забрюшинного пространства, которая явилась диагностической находкой. После обследования и предварительной подготовки больная прооперирована в стационарных условиях отделения онкогинекологии Ташкентского городского филиала Республиканского специализированного научно-практического медицинского центра онкологии и радиологии с предварительном диагнозом по поводу опухоли яичника. Интраоперационно выявлена опухоль забрюшинного пространства с поражением обтураторного нерва. В дальнейшем с помощью иммуногистохимического анализа уточнен гистологический тип опухоли: злокачественная шваннома ретроперитонеального пространства.</p><p><bold>Заключение.</bold> Эти данные могут помочь при ведении больных с данной патологией и улучшить диагностику больных c опухолями малого таза.</p></trans-abstract><kwd-group xml:lang="en"><kwd>malignant schwannoma</kwd><kwd>retroperitoneal tumor</kwd><kwd>differential diagnosis of ovarian tumor</kwd><kwd>immunohistochemical analysis</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>злокачественная шваннома</kwd><kwd>забрюшинная опухоль</kwd><kwd>дифференциальная диагностика опухоли яичника</kwd><kwd>иммуногистохимический анализ</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Xu H., Sha N., Li H.W. et al. A giant pelvic malignant schwannoma: a case report and literature review. 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