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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="research-article" 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">845</article-id><article-id pub-id-type="doi">10.17650/2949-5857-2025-15-4-99-106</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>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Endosalpingiosis of the bladder. Clinical observation and literature analysis</article-title><trans-title-group xml:lang="ru"><trans-title>Эндосальпингиоз мочевого пузыря. Клиническое наблюдение и анализ мировой литературы</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8887-5108</contrib-id><name-alternatives><name xml:lang="en"><surname>Turupaev</surname><given-names>K. A.</given-names></name><name xml:lang="ru"><surname>Турупаев</surname><given-names>К. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>Kir-turupaev@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0009-5878-6951</contrib-id><name-alternatives><name xml:lang="en"><surname>Ladyko</surname><given-names>D. D.</given-names></name><name xml:lang="ru"><surname>Ладыко</surname><given-names>Д. Д.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>Kir-turupaev@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0005-8645-4365</contrib-id><name-alternatives><name xml:lang="en"><surname>Tsutsaev</surname><given-names>A. K.</given-names></name><name xml:lang="ru"><surname>Цуцаев</surname><given-names>А. К.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>Kir-turupaev@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0727-2976</contrib-id><name-alternatives><name xml:lang="en"><surname>Klimov</surname><given-names>A. V.</given-names></name><name xml:lang="ru"><surname>Климов</surname><given-names>А. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>Kir-turupaev@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9158-837X</contrib-id><name-alternatives><name xml:lang="en"><surname>Figurin</surname><given-names>K. M.</given-names></name><name xml:lang="ru"><surname>Фигурин</surname><given-names>К. М.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>Kir-turupaev@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7748-9527</contrib-id><name-alternatives><name xml:lang="en"><surname>Matveev</surname><given-names>V. B.</given-names></name><name xml:lang="ru"><surname>Матвеев</surname><given-names>В. Б.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>Kir-turupaev@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">N.N. Blokhin National Medical 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="2025-12-21" publication-format="electronic"><day>21</day><month>12</month><year>2025</year></pub-date><volume>15</volume><issue>4</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>99</fpage><lpage>106</lpage><history><date date-type="received" iso-8601-date="2025-09-26"><day>26</day><month>09</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Turupaev K.A., Ladyko D.D., Tsutsaev A.K., Klimov A.V., Figurin K.M., Matveev V.B.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Турупаев К.А., Ладыко Д.Д., Цуцаев А.К., Климов А.В., Фигурин К.М., Матвеев В.Б.</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Turupaev K.A., Ladyko D.D., Tsutsaev A.K., Klimov A.V., Figurin K.M., Matveev V.B.</copyright-holder><copyright-holder xml:lang="ru">Турупаев К.А., Ладыко Д.Д., Цуцаев А.К., Климов А.В., Фигурин К.М., Матвеев В.Б.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/></permissions><self-uri xlink:href="https://onco-surgery.info/jour/article/view/845">https://onco-surgery.info/jour/article/view/845</self-uri><abstract xml:lang="en"><p>We present a rare clinical observation of histologically confirmed endosalpingiosis of the bladder in a female patient aged 44 years who underwent combination treatment. This observation is the 8<sup>th</sup> documented case of isolated endosalpingiosis of the bladder in the world.</p> <p>The article demonstrates the rarity of endosalpingiosis of the bladder, complexity of differential diagnosis of this disease, and the necessity of comprehensive examination with mandatory accurate tumor histogenesis prior to determination of treatment tactics in patients with bladder neoplasms.</p></abstract><trans-abstract xml:lang="ru"><p>Представляем редкое клиническое наблюдение гистологически подтвержденного эндосальпингиоза мочевого пузыря у пациентки 44 лет, прошедшей комбинированное лечение. Данное наблюдение является 8-м задокументированным случаем изолированного эндосальпингиоза мочевого пузыря в мире.</p> <p>Работа демонстрирует редкость эндосальпингиоза мочевого пузыря, сложность дифференциальной диагностики данного заболевания и необходимость проведения комплексного обследования с обязательным определением точного гистогенеза опухоли перед выбором тактики лечения больных с новообразованиями мочевого пузыря.</p></trans-abstract><kwd-group xml:lang="en"><kwd>endosalpingiosis</kwd><kwd>mullerianosis</kwd><kwd>transurethral resection of bladder tumors</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>эндосальпингиоз</kwd><kwd>мюллерианоз</kwd><kwd>трансуретральная резекция мочевого пузыря</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Sampson J.A. Postsalpingectomy endometriosis (endosalpingiosis). Am J Obstet Gynecol 1930;20(4):443–80. 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