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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">Journal of Clinical Practice</journal-id><journal-title-group><journal-title xml:lang="en">Journal of Clinical Practice</journal-title><trans-title-group xml:lang="ru"><trans-title>Клиническая практика</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2220-3095</issn><issn publication-format="electronic">2618-8627</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">696056</article-id><article-id pub-id-type="doi">10.17816/clinpract696056</article-id><article-id pub-id-type="edn">CVNWEA</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">Radical surgery following inadequate drainage procedures for cystic neoplasms of the pancreas</article-title><trans-title-group xml:lang="ru"><trans-title>Радикальные операции после ошибочного дренирующего лечения кистозных опухолей поджелудочной железы</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9074-5676</contrib-id><contrib-id contrib-id-type="spin">6808-9492</contrib-id><name-alternatives><name xml:lang="en"><surname>Markov</surname><given-names>Pavel V.</given-names></name><name xml:lang="ru"><surname>Марков</surname><given-names>Павел Викторович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, PhD</p></bio><bio xml:lang="ru"><p>д-р мед. наук</p></bio><email>pvmarkov@mail.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/0000-0003-1787-5156</contrib-id><contrib-id contrib-id-type="spin">2553-1200</contrib-id><name-alternatives><name xml:lang="en"><surname>Mamoshin</surname><given-names>Andrian V.</given-names></name><name xml:lang="ru"><surname>Мамошин</surname><given-names>Андриан Валерьевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, PhD, Assistant Professor</p>
<p>
</p><p> </p>
</bio><bio xml:lang="ru"><p>доцент</p></bio><email>dr.mamoshin@mail.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/0000-0003-1555-1596</contrib-id><contrib-id contrib-id-type="spin">4996-7802</contrib-id><name-alternatives><name xml:lang="en"><surname>Struchkov</surname><given-names>Vladimir Yu.</given-names></name><name xml:lang="ru"><surname>Стручков</surname><given-names>Владимир Юрьевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, PhD</p></bio><bio xml:lang="ru"><p>канд. мед. наук</p></bio><email>doc.struchkov@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9425-1924</contrib-id><contrib-id contrib-id-type="spin">3553-7425</contrib-id><name-alternatives><name xml:lang="en"><surname>Arutyunov</surname><given-names>Ovanes R.</given-names></name><name xml:lang="ru"><surname>Арутюнов</surname><given-names>Ованес Робертович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD</p></bio><email>arutyunov_ovanes@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7283-7465</contrib-id><contrib-id contrib-id-type="spin">2025-4436</contrib-id><name-alternatives><name xml:lang="en"><surname>Dvukhzhilov</surname><given-names>Mikhail V.</given-names></name><name xml:lang="ru"><surname>Двухжилов</surname><given-names>Михаил Вячеславович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD</p></bio><email>dr.dvukhzhilov@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8853-3394</contrib-id><contrib-id contrib-id-type="spin">2674-0484</contrib-id><name-alternatives><name xml:lang="en"><surname>Burmistrov</surname><given-names>AleksandrAleksandr I.</given-names></name><name xml:lang="ru"><surname>Бурмистров</surname><given-names>Александр Игоревич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD</p></bio><email>aibur3619@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">A.V. Vishnevsky National Medical Research Center of Surgery</institution></aff><aff><institution xml:lang="ru">Национальный медицинский исследовательский центр хирургии имени А.В. Вишневского</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Russian Medical Academy of Continuous Professional Education</institution></aff><aff><institution xml:lang="ru">Российская медицинская академия непрерывного профессионального образования</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Orel State University</institution></aff><aff><institution xml:lang="ru">Орловский государственный университет имени И.С. Тургенева</institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2026-01-05" publication-format="electronic"><day>05</day><month>01</month><year>2026</year></pub-date><pub-date date-type="pub" iso-8601-date="2026-02-05" publication-format="electronic"><day>05</day><month>02</month><year>2026</year></pub-date><volume>16</volume><issue>4</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>63</fpage><lpage>76</lpage><history><date date-type="received" iso-8601-date="2025-11-10"><day>10</day><month>11</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-11-24"><day>24</day><month>11</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2026, Eco-Vector</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2026, Эко-Вектор</copyright-statement><copyright-year>2026</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/"/><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://clinpractice.ru/clinpractice/article/view/696056">https://clinpractice.ru/clinpractice/article/view/696056</self-uri><abstract xml:lang="en"><p><bold>BACKGROUND:</bold> Despite the presence of national and international recommendations on the diagnostics and treatment of cystic lesions in the pancreas, the consequences of inappropriate drainage procedures for pancreatic cystic neoplasms mistaken for the post-necrotic pancreatic pseudocysts, remain only fragmentally researched and are mainly presented by single observations or small case series without the detailed analysis of the delay of the radical intervention and of the effects of previous surgeries on the complexity and on the immediate results of resection. Reminding about this problem based on the analysis of our own clinical experience is important for the prevention of such tactical mistakes. <bold>AIM:</bold> The analysis of the remote results and of the consequences of non-radical draining surgeries conducted in patients with pancreatic cystic neoplasms, initially mistakenly diagnosed as benign pancreatic cysts. <bold>METHODS:</bold> From January 2016 until February 2025, out of the 177 patients with previous resection interventions in the pancreas due to having the cystic lesions, a group of 19 (10.7%) patients was isolated, which previously underwent the non-radical draining surgeries. A retrospective analysis was arranged on the data of their treatment and the postoperative complications, as well as the comparison of preoperative diagnoses to the data from the definitive histological examination. <bold>RESULTS:</bold> All the 19 patients with a past draining intervention had a reported recurrence of the cystic lesion within the period from 2 weeks to 84 months (with the median of 6 months). During the repeated pre-operative examination, the following conditions were diagnosed: mucinous cystic neoplasm (15; 78.9%), main-duct intraductal papillary mucinous neoplasm (2; 10.5%), solid pseudopapillary neoplasm (1; 5.3%), and suspected adenocarcinoma (1; 5.3%). All the patients underwent the radical resections: the pancreaticoduodenectomy (in 4) and the distal pancreatectomy (in 15). The complications of grade III and higher acc. to the classification by Clavien–Dindo were developing in 5 (26.3%) patients, there were no deaths. The definitive histological diagnosis has confirmed the preoperative conclusion on the mucinous cystic neoplasm in 86.7% of the cases (13/15); other cases were the verified serous cystadenoma and the solid pseudopapillary neoplasm. The diagnoses of the solid pseudopapillary neoplasm and the adenocarcinoma, set before surgery, were completely matching to the morphological data. <bold>CONCLUSION:</bold> The patients with cystic lesions in the pancreas must receive the comprehensive examination at the pre-operative stage for the precise differential diagnostics of the post-necrotic cysts and the cystic tumor. The inappropriate drainage procedures in cases of cystic tumor in the pancreas does not lead to recovery, it delays the radical surgery, which can complicate its further course and worsen the treatment prognosis.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Обоснование.</bold> Несмотря на наличие национальных и международных рекомендаций по диагностике и лечению кистозных образований поджелудочной железы, последствия ошибочного дренирующего лечения кистозных опухолей, принятых за постнекротические псевдокисты, остаются изученными фрагментарно и в основном представлены единичными наблюдениями или небольшими сериями без детального анализа задержки радикального вмешательства и влияния предшествующих операций на сложность и непосредственные результаты резекции. Напоминание об этой проблеме на основе анализа собственного клинического опыта важно для профилактики подобных тактических ошибок. <bold>Цель исследования</bold> — анализ отдалённых результатов и последствий нерадикальных дренирующих операций, выполненных у пациентов с кистозными опухолями поджелудочной железы, изначально ошибочно диагностированными как доброкачественные кисты поджелудочной железы. <bold>Методы.</bold> С января 2016 по февраль 2025 года из 177 пациентов, перенёсших резекционные вмешательства на поджелудочной железе по поводу кистозных образований, была выделена группа из 19 (10,7%) пациентов, которым ранее были выполнены нерадикальные дренирующие операции. Проведён ретроспективный анализ их лечения и послеоперационных осложнений, а также сравнение предоперационных диагнозов с данными окончательного гистологического исследования. <bold>Результаты.</bold> У всех 19 пациентов после дренирующего вмешательства отмечался рецидив кистозного образования в сроки от 2 недель до 84 месяцев (медиана 6 месяцев). При повторном предоперационном обследовании были диагностированы муцинозная кистозная опухоль (15; 78,9%), внутрипротоковая папиллярная муцинозная опухоль I типа (2; 10,5%), солидная псевдопапиллярная опухоль (1; 5,3%), подозрение на аденокарциному (1; 5,3%). Всем пациентам выполнены радикальные резекции: панкреатодуоденальная резекция (у 4) и дистальная резекция поджелудочной железы (у 15). Осложнения III и более высоких степеней по Clavien–Dindo возникли у 5 (26,3%) пациентов, летальных исходов не было. Окончательный гистологический диагноз подтвердил предоперационное заключение о муцинозной кистозной опухоли в 86,7% случаев (13/15); в остальных случаях были верифицированы серозная цистаденома и солидная псевдопапиллярная опухоль. Диагнозы солидной псевдопапиллярной опухоли и аденокарциномы, установленные до операции, полностью совпали с морфологическими данными.<bold> Заключение.</bold> Пациенты с кистозным образованием поджелудочной железы должны подвергаться всестороннему обследованию на предоперационном этапе для точной дифференциальной диагностики постнекротической кисты и кистозной опухоли. Ошибочное дренирующее лечение в случаях кистозной опухоли поджелудочной железы не приводит к излечению, задерживает выполнение радикальной операции, что может осложнять её выполнение и ухудшать прогноз лечения.</p></trans-abstract><kwd-group xml:lang="en"><kwd>pancreas</kwd><kwd>pancreatic cystic neoplasms</kwd><kwd>mucinous cystic neoplasm</kwd><kwd>intraductal papillary mucinous neoplasm</kwd><kwd>solid pseudopapillary neoplasm</kwd><kwd>serous cystadenoma</kwd><kwd>drainage procedures</kwd><kwd>pancreatic resection</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>поджелудочная железа</kwd><kwd>кистозные опухоли поджелудочной железы</kwd><kwd>муцинозная кистозная опухоль</kwd><kwd>внутрипротоковая папиллярная муцинозная опухоль</kwd><kwd>солидная псевдопапиллярная опухоль</kwd><kwd>серозная цистаденома</kwd><kwd>дренирующие вмешательства</kwd><kwd>резекция поджелудочной железы</kwd></kwd-group><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="en">Ministry of Science And Higher Education of the Russian Federation</institution></institution-wrap><institution-wrap><institution xml:lang="ru">Министерство науки и высшего образования Российской Федерации</institution></institution-wrap></funding-source><award-id>056-00005-23-00</award-id></award-group><funding-statement xml:lang="en">The research work was carried out within the framework of the scientific-research work by the State Assignment of the Ministry of Health of the Russian Federation: R&amp;D No. 123020700067-2 “New technologies and personalized approach in the combined differential diagnostics and surgical treatment of focal lesions in the pancreas”, conducted within the premises of the Federal State Budgetary Institution “National Medical Research Center of Surgery named after A.V. Vishenvsky” (Russian Federation). Type of funding: financial support of the R&amp;D activities, provision of the research infrastructure of the center (equipment, expendables, software). No additional targeted financing, including the preparation of the publication, was provided to the authors. The organization acting as a source of financing, did not participate in compiling the research design, in collecting, analyzing or interpreting the data, in preparing the manuscript and in making the decision on submitting the article to the journal; no limitations were implemented regarding the usage of data and the distribution of the research results from the source of funding.</funding-statement><funding-statement xml:lang="ru">Исследование выполнено в рамках научно-исследовательской работы по государственному заданию Минздрава России: НИОКТР № 123020700067-2 «Новые технологии и персонифицированный подход в комплексной дифференциальной диагностике и хирургическом лечении очаговых образований поджелудочной железы», проводимой на базе ФГБУ НМИЦ хирургии им. А.В. Вишневского (Российская Федерация). Форма поддержки: финансовое обеспечение выполнения НИОКТР, предоставление исследовательской инфраструктуры центра (оборудование, расходные материалы, программное обеспечение). Дополнительного целевого финансирования, в том числе для подготовки публикации, авторы не получали. Организация — источник финансирования не участвовала в разработке дизайна исследования, сборе, анализе и интерпретации данных, подготовке рукописи и принятии решения о представлении статьи в журнал; каких-либо ограничений на использование данных и распространение результатов исследования источником финансирования не устанавливалось.</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Guilabert L, Martín-Lago R, Serrano C, et al. Endoscopic ultrasound for pancreatic cystic lesions: a narrative review. BMJ Open Gastroenterol. 2025;12(1):e001893. doi: 10.1136/bmjgast-2025-001893</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Warshaw AL, Rutledge PL, Fernández-del Castillo C, et al. Cystic tumors mistaken for pancreatic pseudocysts. 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