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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">Russian Journal of Pediatric Surgery</journal-id><journal-title-group><journal-title xml:lang="en">Russian Journal of Pediatric Surgery</journal-title><trans-title-group xml:lang="ru"><trans-title>Детская хирургия</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1560-9510</issn><issn publication-format="electronic">2412-0677</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">759</article-id><article-id pub-id-type="doi">10.17816/ps759</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Case reports</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>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Multiple foreign bodies (magnetic balls) in the bladder in a 16-year-old teenager</article-title><trans-title-group xml:lang="ru"><trans-title>Множественные инородные тела мочевого пузыря (магнитные шарики) у подростка 16 лет</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kovarskiy</surname><given-names>Semen L.</given-names></name><name xml:lang="ru"><surname>Коварский</surname><given-names>Семен Львович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Dr. Sci. (Medicine), Professor</p></bio><bio xml:lang="ru"><p>доктор медицинских наук, профессор</p></bio><email>sim3150@gmail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Zakharov</surname><given-names>Andrey I.</given-names></name><name xml:lang="ru"><surname>Захаров</surname><given-names>Андрей Игоревич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Cand. Sci. (Medicine)</p></bio><bio xml:lang="ru"><p>кандидат медицинских наук</p></bio><email>zaharov@pedurology.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Sklyarova</surname><given-names>Tatyana   A.</given-names></name><name xml:lang="ru"><surname>Склярова</surname><given-names>Татьяна Андреевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Cand. Sci. (Medicine)</p></bio><bio xml:lang="ru"><p>кандидат медицинских наук</p></bio><email>info@pedurology.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9574-7462</contrib-id><name-alternatives><name xml:lang="en"><surname>Tekotov</surname><given-names>Aleksey N.</given-names></name><name xml:lang="ru"><surname>Текотов</surname><given-names>Алексей Николаевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Cand. Sci. (Medicine), Assoc. Professor</p></bio><bio xml:lang="ru"><p>кандидат медицинских наук, доц.</p></bio><email>altekotov@yandex.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0003-7162-294X</contrib-id><name-alternatives><name xml:lang="en"><surname>Kuznetsova</surname><given-names>Maria S.</given-names></name><name xml:lang="ru"><surname>Кузнецова</surname><given-names>Мария Сергеевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio><p>MD</p></bio><email>kuznetsovamasha-98@ya.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">N.I. Pirogov Russian National Research Medical University</institution></aff><aff><institution xml:lang="ru">Российский национальный исследовательский медицинский университет имени Н.И. Пирогова</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">N.F. Filatov Children's City Hospital</institution></aff><aff><institution xml:lang="ru">Детская городская клиническая больница имени Н.Ф. Филатова</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">N.F.Filatov Children's City Hospital</institution></aff><aff><institution xml:lang="ru">Детская городская клиническая больница имени Н.Ф. Филатова</institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2024-08-12" publication-format="electronic"><day>12</day><month>08</month><year>2024</year></pub-date><pub-date date-type="pub" iso-8601-date="2024-09-09" publication-format="electronic"><day>09</day><month>09</month><year>2024</year></pub-date><volume>28</volume><issue>4</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>397</fpage><lpage>402</lpage><history><date date-type="received" iso-8601-date="2023-11-05"><day>05</day><month>11</month><year>2023</year></date><date date-type="accepted" iso-8601-date="2024-07-09"><day>09</day><month>07</month><year>2024</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2024, Kovarskiy S.L., Zakharov A.I., Sklyarova T.A., Tekotov A.N., Kuznetsova M.S.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2024, Коварский С.Л., Захаров А.И., Склярова Т.А., Текотов А.Н., Кузнецова М.С.</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="en">Kovarskiy S.L., Zakharov A.I., Sklyarova T.A., Tekotov A.N., Kuznetsova M.S.</copyright-holder><copyright-holder xml:lang="ru">Коварский С.Л., Захаров А.И., Склярова Т.А., Текотов А.Н., Кузнецова М.С.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/" start_date="2025-09-09"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by-nc-nd/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://jps-nmp.ru/jour/article/view/759">https://jps-nmp.ru/jour/article/view/759</self-uri><abstract xml:lang="en"><p><bold><italic>BACKGROUND</italic></bold><bold><italic>:</italic></bold> In the practice of a pediatric urologist, foreign bodies in the bladder and urethra are quite rare. Foreign bodies can be variable in shape, composition, size, and most often enter the bladder via the urethra in the retrograde route.</p> <p><bold><italic>CLINICAL</italic></bold><bold><italic> </italic></bold><bold><italic>CASE</italic></bold><bold><italic> </italic></bold><bold><italic>DESCRIPTION</italic></bold><bold><italic>.</italic></bold> The above case demonstrates the long-term location of a large number of foreign bodies (60 magnetic balls) in the bladder of a 16-year-old teenager who was treated at N.F. Filatov Children's City Clinical Hospital in December 2022. The authors describe challenges of differential diagnostics and management of this pathology that they faced. The total number of foreign bodies was determined after surgical treatment.</p> <p><bold><italic>CONCLUSION</italic></bold><bold><italic>:</italic></bold><italic> </italic>This clinical observation is of interest to pediatric urologists and andrologists, since foreign bodies of the bladder is a rare pathology that leads to serious consequences during their long-term location in the organ.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Обоснование</bold><bold>.</bold> В практике детского уролога инородные тела мочевого пузыря и уретры достаточно редкое явление. Инородные тела могут быть вариабельны по форме, составу, размеру и чаще всего попадают в мочевой пузырь ретроградным путём по мочеиспускательному каналу.</p> <p><bold>Описание клинического случая.</bold> Приведённый случай демонстрирует длительное пребывание большого количества инородных тел (60 магнитных шариков) в мочевом пузыре у подростка 16 лет, находившегося на лечении в Детской городской клинической больнице им. Н.Ф. Филатова в декабре 2022 года. Описаны трудности дифференциальной диагностики и лечения данной патологии, с которыми столкнулись авторы во время ведения пациента. Общее количество инородных тел было установлено после оперативного лечения.</p> <p><bold>Заключение.</bold> Данное клиническое наблюдение представляет интерес для детских урологов-андрологов, так как инородные тела мочевого пузыря являются редкой патологией, приводящей к серьёзным последствиям, если инородное тело долго остаётся в организме.</p></trans-abstract><kwd-group xml:lang="en"><kwd>foreign bodies</kwd><kwd>bladder</kwd><kwd>children</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>инородные тела</kwd><kwd>мочевой пузырь</kwd><kwd>дети</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">Nurmukhamedov KN, Radzhabov UA. 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