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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">Urology reports (St. - Petersburg)</journal-id><journal-title-group><journal-title xml:lang="en">Urology reports (St. - Petersburg)</journal-title><trans-title-group xml:lang="ru"><trans-title>Урологические ведомости</trans-title></trans-title-group><trans-title-group xml:lang="zh"><trans-title>Urology reports (St. - Petersburg)</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2225-9074</issn><issn publication-format="electronic">2687-1416</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">636854</article-id><article-id pub-id-type="doi">10.17816/uroved636854</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Original study articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Оригинальные исследования</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">Endoscopic treatment of children with ureteral stones: analysis of the efficacy and safety of contact ureteral lithotripsy</article-title><trans-title-group xml:lang="ru"><trans-title>Эндоскопическое лечение детей c камнями в мочеточнике: анализ эффективности и безопасности контактной уретеролитотрипсии</trans-title></trans-title-group><trans-title-group xml:lang="zh"><trans-title/></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0018-8045</contrib-id><name-alternatives><name xml:lang="en"><surname>Khudaybergenov</surname><given-names>Ulugbek A.</given-names></name><name xml:lang="ru"><surname>Худайбергенов</surname><given-names>Улугбек Атауллаевич</given-names></name><name xml:lang="zh"><surname></surname><given-names></given-names></name></name-alternatives><address><country country="UZ">Uzbekistan</country></address><bio xml:lang="en"><p>MD, Dr. Sci. (Medicine)</p></bio><bio xml:lang="ru"><p>д-р мед. наук</p></bio><email>ulugbek0465@gmail.com</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff4"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0129-0268</contrib-id><name-alternatives><name xml:lang="en"><surname>Nadzhimitdinov</surname><given-names>Yalkin S.</given-names></name><name xml:lang="ru"><surname>Наджимитдинов</surname><given-names>Ялкин Саидович</given-names></name><name xml:lang="zh"><surname></surname><given-names></given-names></name></name-alternatives><address><country country="UZ">Uzbekistan</country></address><bio xml:lang="en"><p>MD, Cand. Sci. (Medicine)</p></bio><bio xml:lang="ru"><p>канд. мед. наук</p></bio><email>dr.jalkin@mail.ru</email><xref ref-type="aff" rid="aff3"/><xref ref-type="aff" rid="aff4"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4295-5548</contrib-id><name-alternatives><name xml:lang="en"><surname>Abdukarimov</surname><given-names>Olimzhon O.</given-names></name><name xml:lang="ru"><surname>Абдукаримов</surname><given-names>Олимжон Одилжонович</given-names></name><name xml:lang="zh"><surname></surname><given-names></given-names></name></name-alternatives><address><country country="UZ">Uzbekistan</country></address><bio xml:lang="en"><p>MD</p></bio><email>mr_ronaldo9@mail.ru</email><xref ref-type="aff" rid="aff3"/><xref ref-type="aff" rid="aff4"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9271-0808</contrib-id><contrib-id contrib-id-type="spin">6330-0871</contrib-id><name-alternatives><name xml:lang="en"><surname>Shomarufov</surname><given-names>Azizbek B.</given-names></name><name xml:lang="ru"><surname>Шомаруфов</surname><given-names>Азизбек Баходирович</given-names></name><name xml:lang="zh"><surname></surname><given-names></given-names></name></name-alternatives><address><country country="UZ">Uzbekistan</country></address><bio xml:lang="en"><p>MD, Cand. Sci. (Medicine)</p></bio><bio xml:lang="ru"><p>канд. мед. наук</p></bio><email>doctor.a@mail.ru</email><xref ref-type="aff" rid="aff3"/><xref ref-type="aff" rid="aff4"/></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><institution xml:lang="zh"></institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Republican Specialized Scientific and Practical Medical Center of Urology</institution></aff><aff><institution xml:lang="ru">Республиканский специализированный научно-практический медицинский центр урологии</institution></aff><aff><institution xml:lang="zh"></institution></aff></aff-alternatives><aff-alternatives id="aff3"><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="aff4"><aff><institution xml:lang="en">Republican Specialized Scientific and Practical Medical Center of Urology</institution></aff><aff><institution xml:lang="ru">Республиканский специализированный научно-практический медицинский центр урологии</institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2025-01-08" publication-format="electronic"><day>08</day><month>01</month><year>2025</year></pub-date><pub-date date-type="pub" iso-8601-date="2025-05-07" publication-format="electronic"><day>07</day><month>05</month><year>2025</year></pub-date><volume>15</volume><issue>1</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><issue-title xml:lang="zh"/><fpage>33</fpage><lpage>39</lpage><history><date date-type="received" iso-8601-date="2024-11-12"><day>12</day><month>11</month><year>2024</year></date><date date-type="accepted" iso-8601-date="2025-01-08"><day>08</day><month>01</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Eco-Vector</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Эко-Вектор</copyright-statement><copyright-statement xml:lang="zh">Copyright ©; 2025,</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Eco-Vector</copyright-holder><copyright-holder xml:lang="ru">Эко-Вектор</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/" start_date="2028-05-07"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://eco-vector.com/for_authors.php#07</ali:license_ref></license></permissions><self-uri xlink:href="https://journals.eco-vector.com/uroved/article/view/636854">https://journals.eco-vector.com/uroved/article/view/636854</self-uri><abstract xml:lang="en"><p><bold>BACKGROUND:</bold> Contact ureteral lithotripsy is considered a minimally invasive treatment method that can reduce the recurrence rate of urolithiasis. However, its use in children requires a specialized approach due to the unique anatomical and physiological characteristics of pediatric patients.</p> <p><bold>AIM:</bold> To study the efficacy and intraoperative complication rate in children with ureteral stones undergoing contact ureteral lithotripsy.</p> <p><bold>MATERIALS AND METHODS:</bold> A retrospective study of 253 children who underwent contact ureteral lithotripsy between 2018 and 2022 was conducted. The mean age of the patients was 9.8±4.1 years, with a predominance of boys (70.4%). Pneumatic and laser lithotripters were used for fragmentation. In some cases, a ureteral stent was placed. The efficacy and safety of the procedure was assessed in children, taking into account the localization of stones and the patient’s age.</p> <p><bold>RESULTS:</bold> The stones were located in the left ureter in 57.7% of cases and in the right ureter in 42.3% of cases. The stones were distributed according to their localization in the distal (30.1%), middle (27.6%), and proximal (42.3%) parts of the ureter. The mean stone size was 10.2±1.3 mm. Laser lithotripsy was used in 58% of cases, while pneumatic lithotripsy was performed in 42% of cases, with a stone-free rate of 92.1%. The mean procedure duration was 62.8±19.3 min, while the length of hospital stay was 2.3±0.5 days. Intraoperative complications were observed in 20 patients (7.9%), with a higher rate in children aged 4–7 years (3.9%), including stone transposition (1.2%) and failure of retrograde access (1.9%). Conversion to open surgery was required in 0.6% of cases due to anatomical complexities in younger patients.</p> <p><bold>CONCLUSIONS:</bold> Contact ureteral lithotripsy is an effective and safe method for ureteral stone removal in children, particularly when using a laser lithotripter, which reduces operative time and minimizes the risk of tissue damage. However, in younger children, additional precautions and an individual approach are required to minimize the risk of complications.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Актуальность.</bold> Контактную уретеролитотрипсию рассматривают как малоинвазивный метод лечения, способный снизить частоту рецидивов мочекаменной болезни, однако его использование у детей требует особого подхода ввиду особенностей анатомии и физиологии детского организма.</p> <p><bold>Цель</bold> — изучить эффективность и частоту интраоперационных осложнений контактной уретеролитотрипсии у детей с камнями мочеточника.</p> <p><bold>Материалы</bold><bold> </bold><bold>и</bold><bold> </bold><bold>методы</bold><bold>.</bold> Проведено ретроспективное исследование 253 детей, перенесших контактную уретеролитотрипсию в период с 2018 по 2022 г. Средний возраст пациентов составил 9,8±4,1 года, с преобладанием мальчиков (70,4%). Для фрагментации использовали пневматический и лазерный литотрипторы. В ряде случаев устанавливали мочеточниковый стент. Оценивали эффективность и безопасность процедуры у детей в контексте локализации камней и возраста пациента.</p> <p><bold>Результаты.</bold><bold> </bold>В 57,7% случаев камни локализовались в левом мочеточнике, в 42,3% — в правом. Камни были распределены по локализации: в дистальном (30,1%), среднем (27,6%) и проксимальном (42,3%) отделах мочеточника. Средний размер камней составил 10,2±1,3 мм. В 58 % случаев применялась лазерная литотрипсия, в 42% — пневматическая, при этом частота полного удаления (stone-free) достигла 92,1%. Средняя продолжительность операции составила 62,8±19,3 мин, длительность госпитализации — 2,3±0,5 дней. Интраоперационные осложнения наблюдались у 20 пациентов (7,9%), с частотой выше — у детей 4–7 лет (3,9%), включая транспозицию камня в 1,2% случаев и невозможность ретроградного доступа — в 1,9%. Конверсия к открытым вмешательствам потребовалась в 0,6% случаев из-за анатомических сложностей у младших пациентов.</p> <p><bold>Выводы.</bold> Контактная уретеролитотрипсия представляет собой эффективный и безопасный метод удаления камней из мочеточника у детей, особенно при использовании лазерного литотриптора, который сокращает время операции и снижает риск повреждений тканей. Тем не менее для детей младшего возраста требуются дополнительные меры предосторожности и индивидуальный подход для минимизации рисков осложнений.</p></trans-abstract><trans-abstract xml:lang="zh"><p/></trans-abstract><kwd-group xml:lang="en"><kwd>urolithiasis</kwd><kwd>ureteral stones</kwd><kwd>contact ureteral lithotripsy</kwd><kwd>stone-free rate</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>мочекаменная болезнь</kwd><kwd>камни мочеточника</kwd><kwd>контактная уретеролитотрипсия</kwd><kwd>stone-free</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Russian Society of Urologists. Urolithiasis. Clinical recommendations. Ministry of Health of the Russian Federation; 2024. Available from: https://cr.minzdrav.gov.ru/preview-cr/7_2 (In Russ.)</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Khudaybergenov UA, Kasimov SS, Abbosov SA, et al. 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