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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">836</article-id><article-id pub-id-type="doi">10.17816/ps836</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">Acute appendicitis complicated by peritonitis in a premature newborn: a clinical observation</article-title><trans-title-group xml:lang="ru"><trans-title>Острый аппендицит, осложнённый перитонитом, у недоношенного новорождённого: клиническое наблюдение</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6183-8286</contrib-id><contrib-id contrib-id-type="spin">7615-7568</contrib-id><name-alternatives><name xml:lang="en"><surname>Gumerov</surname><given-names>Aitbay A.</given-names></name><name xml:lang="ru"><surname>Гумеров</surname><given-names>Аитбай Ахметович</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, профессор</p></bio><email>prof.gumerov@mail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="spin">9517-5314</contrib-id><name-alternatives><name xml:lang="en"><surname>Neudachin</surname><given-names>Artem E.</given-names></name><name xml:lang="ru"><surname>Неудачин</surname><given-names>Артём Евгеньевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD</p></bio><email>nartem1972@yandex.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9991-6630</contrib-id><contrib-id contrib-id-type="spin">4921-3280</contrib-id><name-alternatives><name xml:lang="en"><surname>Gumerov</surname><given-names>Ramil A.</given-names></name><name xml:lang="ru"><surname>Гумеров</surname><given-names>Рамиль Аитбаевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Dr. Sci. (Medicine), Assistant Professor</p></bio><bio xml:lang="ru"><p>д-р мед. наук, доцент</p></bio><email>r.a.gumerov@gmail.com</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0008-1534-9375</contrib-id><name-alternatives><name xml:lang="en"><surname>Mustafin</surname><given-names>Aidar D.</given-names></name><name xml:lang="ru"><surname>Мустафин</surname><given-names>Айдар Дамирович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>ya.aidar120896@gmail.com</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0004-3999-8717</contrib-id><contrib-id contrib-id-type="spin">8512-2674</contrib-id><name-alternatives><name xml:lang="en"><surname>Valitov</surname><given-names>Ildar O.</given-names></name><name xml:lang="ru"><surname>Валитов</surname><given-names>Ильдар Октябревич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Medicine), Assistant Professor</p></bio><bio xml:lang="ru"><p>канд. мед. наук, доцент</p></bio><email>valitovio@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1749-795X</contrib-id><contrib-id contrib-id-type="spin">1174-8850</contrib-id><name-alternatives><name xml:lang="en"><surname>Khidiyatov</surname><given-names>Ildar I.</given-names></name><name xml:lang="ru"><surname>Хидиятов</surname><given-names>Ильдар Ишмурзович</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, профессор</p></bio><email>hidiatoff.ildar@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3154-6885</contrib-id><contrib-id contrib-id-type="spin">5600-3940</contrib-id><name-alternatives><name xml:lang="en"><surname>Minibaeva</surname><given-names>Gulfiya I.</given-names></name><name xml:lang="ru"><surname>Минибаева</surname><given-names>Гульфия Ильфировна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>g.minibaeva@mail.ru</email><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Bashkir State Medical University</institution></aff><aff><institution xml:lang="ru">Башкирский государственный медицинский университет</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Republican Children's Clinical Hospital, Ufa</institution></aff><aff><institution xml:lang="ru">Республиканская детская клиническая больница, Уфа</institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2025-02-13" publication-format="electronic"><day>13</day><month>02</month><year>2025</year></pub-date><pub-date date-type="pub" iso-8601-date="2025-03-17" publication-format="electronic"><day>17</day><month>03</month><year>2025</year></pub-date><volume>29</volume><issue>1</issue><issue-title xml:lang="ru"/><fpage>57</fpage><lpage>62</lpage><history><date date-type="received" iso-8601-date="2024-10-03"><day>03</day><month>10</month><year>2024</year></date><date date-type="accepted" iso-8601-date="2025-02-11"><day>11</day><month>02</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-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="2026-03-17"/><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/836">https://jps-nmp.ru/jour/article/view/836</self-uri><abstract xml:lang="en"><p><bold>BACKGROUND</bold>: Acute appendicitis in premature newborns (AAPI) is very rare case and is described as isolated observations. AAPI symptoms and clinical picture are similar to those of other acute abdominal diseases in premature newborns. Its diagnosis before surgery is one of the complex problems of neonatal surgery. This pathology is detected accidentally during surgery for other diseases.</p> <p><bold>CLINICAL CASE DESCRIPTION</bold>: We present a rare clinical case of acute appendicitis complicated by peritonitis in a premature newborn aged 11 days, weighing 1200 g. After a clinical and radiological examination diagnosis of necrotic enterocolitis (NEC) and perforation of a hollow organ was put. Laparocentesis and drainage of the abdominal cavity were performed. After patient’s state stabilization three days later gangrenous perforated appendicitis was diagnosed during laparotomy 3 days later, and appendectomy was performed. Recovery complied with that of the surgical pathology. On day 13th, the patient was transferred to the department of pathology of premature babies for nursing. The child, being in satisfactory condition, was discharged home at the age of 1 month weighing 2250 g.</p> <p><bold>CONCLUSION</bold>: Laparocentesis and drainage of the abdominal cavity with subsequent laparotomy and appendectomy improves outcomes in AAPI patient.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Обоснование</bold>. Острый аппендицит у недоношенных новорождённых встречается весьма редко и описан в виде единичных наблюдений. Его симптомы и клиническая картина сходны с таковыми при других острых заболеваниях брюшной полости у недоношенных новорождённых. Диагностика этой патологии до операции — одна из сложных проблем неонатальной хирургии. Эта патология выявляется случайно на операции по поводу других заболеваний.</p> <p><bold>Описание клинического случая</bold>. Мы представляем редкий клинический случай острого аппендицита, осложнённого перитонитом, у недоношенного новорождённого в возрасте 11 сут, с массой тела 1200 г. После клинико-рентгенологического исследования с диагнозом «некротизирующий энтероколит, перфорация полого органа» проведён лапароцентез и дренирование брюшной полости. По стабилизации состояния через 3 дня ребёнку на лапаротомии диагностирован гангренозно-перфоративный аппендицит, выполнена аппендэктомия. Выздоровление по хирургической патологии. На 13-е сутки пациент переведён в отделение патологии недоношенных для выхаживания. Ребёнок в удовлетворительном состоянии выписан домой в возрасте 1 мес с массой тела 2250 г.</p> <p><bold>Заключение</bold>. Апароцентез и дренирование брюшной полости с последующим выполнением лапаротомии и аппендэктомии улучшили результаты лечения острого аппендицита у недоношенных новорождённых.</p></trans-abstract><kwd-group xml:lang="en"><kwd>premature newborn</kwd><kwd>clinical case</kwd><kwd>appendicitis</kwd><kwd>peritonitis</kwd><kwd>necrotic enterocolitis</kwd><kwd>laparocentesis</kwd><kwd>surgery</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>недоношенный новорождённый</kwd><kwd>клинический случай</kwd><kwd>аппендицит</kwd><kwd>перитонит</kwd><kwd>некротический энтероколит</kwd><kwd>лапароцентез</kwd><kwd>операция</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Olkhova EB, Kartseva EV, Kuznetsova EV, et al. Neonatal acute appendicitis (Case Report). Radiology — practice. 2015;(3):54–59. EDN: TZIVFV</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Ayoub BH, Al Omran Y, Hassan A, Al Hindi S. 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