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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">819</article-id><article-id pub-id-type="doi">10.17816/ps819</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">Endoscopic resection of a juvenile jejunum polyp which caused recurrent intestinal bleeding in a 12-month-old child: clinical observation</article-title><trans-title-group xml:lang="ru"><trans-title>Эндоскопическое удаление ювенильного полипа тощей кишки, являющегося причиной рецидивирующего кишечного кровотечения у ребёнка 12 мес.: клиническое наблюдение</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8623-0947</contrib-id><contrib-id contrib-id-type="spin">2535-1504</contrib-id><name-alternatives><name xml:lang="en"><surname>Merkulova</surname><given-names>Anastasia O.</given-names></name><name xml:lang="ru"><surname>Меркулова</surname><given-names>Анастасия Олеговна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>anast.merkulova@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6218-3605</contrib-id><contrib-id contrib-id-type="spin">1251-5150</contrib-id><name-alternatives><name xml:lang="en"><surname>Kharitonova</surname><given-names>Anastasia Yu.</given-names></name><name xml:lang="ru"><surname>Харитонова</surname><given-names>Анастасия Юрьевна</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>канд. мед. наук</p></bio><email>anastesia08@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9418-4418</contrib-id><contrib-id contrib-id-type="spin">7894-8369</contrib-id><name-alternatives><name xml:lang="en"><surname>Karaseva</surname><given-names>Olga V.</given-names></name><name xml:lang="ru"><surname>Карасева</surname><given-names>Ольга Витальевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</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>karaseva.o@list.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3666-2674</contrib-id><contrib-id contrib-id-type="spin">3455-9611</contrib-id><name-alternatives><name xml:lang="en"><surname>Shavrov</surname><given-names>Andrey A.</given-names></name><name xml:lang="ru"><surname>Шавров</surname><given-names>Андрей Александрович</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>д-р мед. наук, проф.</p></bio><email>shavrovaa@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/0000-0003-3764-1664</contrib-id><contrib-id contrib-id-type="spin">1054-5830</contrib-id><name-alternatives><name xml:lang="en"><surname>Medinsky</surname><given-names>Pavel V.</given-names></name><name xml:lang="ru"><surname>Мединский</surname><given-names>Павел Владимирович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>pavmedin@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0332-9720</contrib-id><contrib-id contrib-id-type="spin">8674-0578</contrib-id><name-alternatives><name xml:lang="en"><surname>Nalbandyan</surname><given-names>Ruben T.</given-names></name><name xml:lang="ru"><surname>Налбандян</surname><given-names>Рубен Тигранович</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>канд. мед. наук</p></bio><email>rubnalb@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Matytsina</surname><given-names>Erzheni E.</given-names></name><name xml:lang="ru"><surname>Матыцина</surname><given-names>Эржэни Эрдынеевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>ejik-opa@rambler.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0004-4878-5609</contrib-id><name-alternatives><name xml:lang="en"><surname>Batunina</surname><given-names>Inna V.</given-names></name><name xml:lang="ru"><surname>Батунина</surname><given-names>Инна Владимировна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>batuninaiv@zdrav.mos.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9768-9646</contrib-id><contrib-id contrib-id-type="spin">7981-3324</contrib-id><name-alternatives><name xml:lang="en"><surname>Shalstonin</surname><given-names>Mikhail P.</given-names></name><name xml:lang="ru"><surname>Шалатонин</surname><given-names>Михаил Петрович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>mikelpost@list.ru</email><xref ref-type="aff" rid="aff4"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4543-2945</contrib-id><contrib-id contrib-id-type="spin">8923-4470</contrib-id><name-alternatives><name xml:lang="en"><surname>Lunyakova</surname><given-names>Maria A.</given-names></name><name xml:lang="ru"><surname>Лунякова</surname><given-names>Мария Анатольевна</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>канд. мед. наук</p></bio><email>mail@hemacenter.org</email><xref ref-type="aff" rid="aff5"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5823-3574</contrib-id><contrib-id contrib-id-type="spin">1940-3970</contrib-id><name-alternatives><name xml:lang="en"><surname>Alekseev</surname><given-names>Ilya F.</given-names></name><name xml:lang="ru"><surname>Алексеев</surname><given-names>Илья Фёдорович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>alekseevif@zdrav.mos.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1561-5510</contrib-id><contrib-id contrib-id-type="spin">4291-6995</contrib-id><name-alternatives><name xml:lang="en"><surname>Frolov</surname><given-names>Egor A.</given-names></name><name xml:lang="ru"><surname>Фролов</surname><given-names>Егор Александрович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>slon.frolov@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kapustin</surname><given-names>Vitaly A.</given-names></name><name xml:lang="ru"><surname>Капустин</surname><given-names>Виталий Анатольевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>kapustinva@zdrav.mos.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0178-2265</contrib-id><contrib-id contrib-id-type="spin">2381-3024</contrib-id><name-alternatives><name xml:lang="en"><surname>Shavrov</surname><given-names>Anton A.</given-names></name><name xml:lang="ru"><surname>Шавров</surname><given-names>Антон Андреевич</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>канд. мед. наук</p></bio><email>shavrov_a_a@staff.sechenov.ru</email><xref ref-type="aff" rid="aff6"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Clinical and Research Institute of Emergency Pediatric Surgery and Trauma</institution></aff><aff><institution xml:lang="ru">Научно-исследовательский институт неотложной детской хирургии и травматологии</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">National Medical Research Center for Children's Health</institution></aff><aff><institution xml:lang="ru">Национальный медицинский исследовательский центр здоровья детей</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Russian National Research Medical University named after N.I. Pirogov</institution></aff><aff><institution xml:lang="ru">Российский национальный исследовательский медицинский университет имени Н.И. Пирогова</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">Morozov Children's Municipal Clinical Hospital</institution></aff><aff><institution xml:lang="ru">Морозовская детская городская клиническая больница</institution></aff></aff-alternatives><aff-alternatives id="aff5"><aff><institution xml:lang="en">Ryazan State Medical University</institution></aff><aff><institution xml:lang="ru">Рязанский государственный медицинский университет имени академика И.П. Павлова</institution></aff></aff-alternatives><aff-alternatives id="aff6"><aff><institution xml:lang="en">I.M. Sechenov First Moscow State Medical University (Sechenov University)</institution></aff><aff><institution xml:lang="ru">Первый МГМУ им. И.М. Сеченова Минздрава России (Сеченовский Университет)</institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2024-10-22" publication-format="electronic"><day>22</day><month>10</month><year>2024</year></pub-date><pub-date date-type="pub" iso-8601-date="2024-11-11" publication-format="electronic"><day>11</day><month>11</month><year>2024</year></pub-date><volume>28</volume><issue>5</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>494</fpage><lpage>503</lpage><history><date date-type="received" iso-8601-date="2024-07-25"><day>25</day><month>07</month><year>2024</year></date><date date-type="accepted" iso-8601-date="2024-09-23"><day>23</day><month>09</month><year>2024</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2024, Merkulova A.O., Kharitonova A.Y., Karaseva O.V., Shavrov A.A., Medinsky P.V., Nalbandyan R.T., Matytsina E.E., Batunina I.V., Shalstonin M.P., Lunyakova M.A., Alekseev I.F., Frolov E.A., Kapustin V.A., Shavrov A.A.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2024, Меркулова А.О., Харитонова А.Ю., Карасева О.В., Шавров А.А., Мединский П.В., Налбандян Р.Т., Матыцина Э.Э., Батунина И.В., Шалатонин М.П., Лунякова М.А., Алексеев И.Ф., Фролов Е.А., Капустин В.А., Шавров А.А.</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="en">Merkulova A.O., Kharitonova A.Y., Karaseva O.V., Shavrov A.A., Medinsky P.V., Nalbandyan R.T., Matytsina E.E., Batunina I.V., Shalstonin M.P., Lunyakova M.A., Alekseev I.F., Frolov E.A., Kapustin V.A., Shavrov A.A.</copyright-holder><copyright-holder xml:lang="ru">Меркулова А.О., Харитонова А.Ю., Карасева О.В., Шавров А.А., Мединский П.В., Налбандян Р.Т., Матыцина Э.Э., Батунина И.В., Шалатонин М.П., Лунякова М.А., Алексеев И.Ф., Фролов Е.А., Капустин В.А., Шавров А.А.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/" start_date="2025-11-11"/><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/819">https://jps-nmp.ru/jour/article/view/819</self-uri><abstract xml:lang="en"><p><bold>BACKGROUND:</bold> To verify a source of obscure gastrointestinal bleeding leading to iron deficiency anemia is a challenging diagnostic problem. Intestinal polyps can be one of such sources. Sporadic juvenile intestinal polyps are extremely rare at the first year of life. The authors present a clinical case which demonstrates endoscopic diagnostics and resection of a jejunum polyp in a 12-month-old child weighing 6.3 kg. We did not find similar publications in literature.</p> <p><bold>CLINICAL CASE DESCRIPTION:</bold><italic> </italic>A 12-month-old boy was admitted to our clinic with long-lasting complaints of dark stool and iron deficiency anemia. For the first time, gastrointestinal bleeding symptoms appeared at the age of one month. The child was repeatedly examined, but gastrointestinal bleeding source was not found. The child was prescribed symptomatic therapy for iron deficiency anemia including red blood cell transfusion. At current hospitalization in our clinic an intestinal polyp and transient small intestinal intussusception were suspected at ultrasound examination. The child underwent esophagogastroduodenoscopy, video capsule endoscopy, colonoscopy, laparoscopy. But the source of the bleeding was not found. During the repeated enteroscopy at 40 cm distally to the pylorus a sporadic juvenile jejunum polyp 17×15 mm was found and resected. The postoperative period was uneventful. In 1 month, there were no complaints as for the catamnesis, the child's stool had the usual characteristics, the indicators of "red blood" corresponded to the age norm.</p> <p><bold>CONCLUSION:</bold> A sporadic juvenile jejunal polyp may be a cause of obscure recurrent intestinal bleeding in children. Modern intraluminal endoscopy allows not only to put diagnosis, but also to perform a minimally invasive surgical intervention.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Обоснование.</bold> Верификация причин скрытого желудочно-кишечного кровотечения, ведущего к развитию железодефицитной анемии, является сложной диагностической задачей. Кишечные полипы могут быть одной из причин таких кровотечений. Спорадические ювенильные полипы тонкой кишки практически не встречаются на первом году жизни ребёнка. Представленное клиническое наблюдение демонстрирует эндоскопическую диагностику и удаление полипа тощей кишки у ребёнка с массой тела 6,3 кг в возрасте 12 мес. В доступной нам литературе мы не нашли подобных публикаций.</p> <p><bold>Описание клинического случая.</bold> Мальчик (12 мес.) был госпитализирован в нашу клинику с жалобами на тёмный стул и железодефицитную анемию в течение длительного времени. Впервые симптомы желудочно-кишечного кровотечения возникли в возрасте 1 мес. Ребёнок неоднократно обследовался, однако причина кровотечения не была верифицирована. Проводилась симптоматическая терапия железодефицитной анемии, в том числе, трансфузии эритроцитарной массы. В настоящую госпитализацию в ходе ультразвукового исследования органов брюшной полости на фоне транзиторной тонкокишечной инвагинации был заподозрен полип кишечника. Ребёнку были проведены эзофагогастродуоденоскопия, видеокапсульная эндоскопия, колоноскопия, лапароскопия. Однако источник кровотечения установить не удалось. При повторной энтероскопии на расстоянии 40 см дистальнее пилорического канала был диагностирован и удалён спорадический ювенильный полип тощей кишки размерами 17×15 мм. Течение послеоперационного периода гладкое. В катамнезе через 1 мес. жалоб не было, стул у ребёнка был обычных характеристик, показатели «красной крови» соответствовали возрастной норме.</p> <p><bold>Заключение.</bold> Причиной скрытого рецидивирующего кишечного кровотечения у детей раннего возраста может быть спорадический ювенильный полип тощей кишки. Современная внутрипросветная эндоскопия позволяет не только диагностировать, но и выполнить малоинвазивное хирургическое лечение.</p></trans-abstract><kwd-group xml:lang="en"><kwd>gastrointestinal bleeding</kwd><kwd>sporadic juvenile polyp</kwd><kwd>endoscopic resection</kwd><kwd>iron deficiency anemia</kwd><kwd>children</kwd><kwd>case report</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>желудочно-кишечное кровотечение</kwd><kwd>спорадический ювенильный полип</kwd><kwd>эндоскопическая резекция</kwd><kwd>железодефицитная анемия</kwd><kwd>дети</kwd><kwd>клиническое наблюдение</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">Kharitonova AY, Leonov DI, Kapustin VA, et al. Gastrointestinal hemorrhage in children. Detskaya Khirurgiya (Russian Journal of Pediatric Surgery). 2017;21(5):266–273. 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