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<article article-type="research-article" dtd-version="1.3" 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" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">oncotomsk</journal-id><journal-title-group><journal-title xml:lang="ru">Сибирский онкологический журнал</journal-title><trans-title-group xml:lang="en"><trans-title>Siberian journal of oncology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1814-4861</issn><issn pub-type="epub">2312-3168</issn><publisher><publisher-name>Tomsk National Research Medical Сепtеr of the Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21294/1814-4861-2020-19-5-21-27</article-id><article-id custom-type="elpub" pub-id-type="custom">oncotomsk-1573</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>КЛИНИЧЕСКИЕ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CLINICAL STUDIES</subject></subj-group></article-categories><title-group><article-title>ЗАКОНОМЕРНОСТИ РАЗВИТИЯ ЛЕЧЕБНОГО ПАТОМОРФОЗА ПРИ КОМБИНИРОВАННОМ ЛЕЧЕНИИ РАКА ЖЕЛУДКА С НЕОАДЪЮВАНТНОЙ ХИМИОЛУЧЕВОЙ ТЕРАПИЕЙ (РЕЗУЛЬТАТЫ МНОГОЦЕНТРОВОГО РАНДОМИЗИРОВАННОГО ИССЛЕДОВАНИЯ)</article-title><trans-title-group xml:lang="en"><trans-title>ASSESSMENT OF HISTOPATHOLOGICAL RESPONSE TO NEOADJUVANT CHEMORADIOTHERAPY IN GASTRIC CANCER PATIENTS: A MULTI-CENTER RANDOMIZED STUDY</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2136-1994</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Скоропад</surname><given-names>В. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Skoropad</surname><given-names>V. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор медицинских наук, ведущий научный сотрудник,</p><p>249036, г. Обнинск, ул. Королева, 4</p></bio><bio xml:lang="en"><p>MD, DSc, Leading Researcher,</p><p>4, Koroleva Street, Obninsk-249036</p></bio><email xlink:type="simple">skoropad@mrrc.obninsk.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4701-0375</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Афанасьев</surname><given-names>С. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Afanasyev</surname><given-names>S. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор медицинских наук, профессор, заведующий отделением абдоминальной онкологии,</p><p>634009, г. Томск, пер. Кооперативный, 5</p></bio><bio xml:lang="en"><p>MD, DSc, Professor, Head of the Department of Abdominal Oncology,</p><p>5, Kooperativny Street, 634050-Tomsk</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гамаюнов</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Gamayunov</surname><given-names>S. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат медицинских наук, заместитель главного врача по хирургии,</p><p>428020, Чувашская Республика, г. Чебоксары, ул. Гладкова, 31</p></bio><bio xml:lang="en"><p>MD, PhD, </p><p>31, Gladkova Street, 428020-Cheboksary</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Соколов</surname><given-names>П. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Sokolov</surname><given-names>P. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>249036, г. Обнинск, ул. Королева, 4</p></bio><bio xml:lang="en"><p>MD,</p><p>4, Koroleva Street, Obninsk-249036</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7957-0115</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Жаворонкова</surname><given-names>Е. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Zhavoronkova</surname><given-names>Ye. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>врач-патологоанатом, </p><p>249036, г. Обнинск, ул. Королева, 4</p></bio><bio xml:lang="en"><p>MD, pathologist,</p><p>4, Koroleva Street, Obninsk-249036</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Силантьева</surname><given-names>Н. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Silanteva</surname><given-names>N. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор медицинских наук, заведующая отделением компьютерной томографии,</p><p>249036, г. Обнинск, ул. Королева, 4</p></bio><bio xml:lang="en"><p>MD, DSc, Head of the Department of Computer Tomography,</p><p>4, Koroleva Street, Obninsk-249036</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7689-6032</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Иванов</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Ivanov</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор медицинских наук, профессор РАН, директор,</p><p>249036, г. Обнинск, ул. Королева, 4</p></bio><bio xml:lang="en"><p>MD, DSc, Director,</p><p>4, Koroleva Street, Obninsk-249036</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8784-8415</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Каприн</surname><given-names>А. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Kaprin</surname><given-names>A. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор медицинских наук, профессор, академик РАН, генеральный директор, </p><p>249036, г. Обнинск, ул. Королева, 4</p></bio><bio xml:lang="en"><p>MD, DSc, Professor, Member of the Russian Academy of Sciences, General Director,</p><p>4, Koroleva Street, Obninsk-249036</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>МРНЦ им. А.Ф. Цыба – Филиал ФГБУ «НМИЦ радиологии» Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>A.F. Tsyb Medical Radiology Research Center affiliated to National Medical Research Center of Radiology of the Ministry of Health of the Russian Federation</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Научно-исследовательский институт онкологии, Томский национальный исследовательский медицинский центр Российской академии наук</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Cancer Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>АУ «Республиканский клинический онкологический диспансер» Минздрава Чувашии</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Republic Clinical Cancer Center, of the Ministry of Health of the Chuvash Republic</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>27</day><month>10</month><year>2020</year></pub-date><volume>19</volume><issue>5</issue><fpage>21</fpage><lpage>27</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Скоропад В.Ю., Афанасьев С.Г., Гамаюнов С.В., Соколов П.В., Жаворонкова Е.С., Силантьева Н.К., Иванов С.А., Каприн А.Д., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Скоропад В.Ю., Афанасьев С.Г., Гамаюнов С.В., Соколов П.В., Жаворонкова Е.С., Силантьева Н.К., Иванов С.А., Каприн А.Д.</copyright-holder><copyright-holder xml:lang="en">Skoropad V.Y., Afanasyev S.G., Gamayunov S.V., Sokolov P.V., Zhavoronkova Y.S., Silanteva N.K., Ivanov S.A., Kaprin A.D.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.siboncoj.ru/jour/article/view/1573">https://www.siboncoj.ru/jour/article/view/1573</self-uri><abstract><p>Представлен анализ выраженности лечебного патоморфоза после неоадъювантной химиолучевой терапии у больных местнораспространенным раком желудка (РЖ) в рамках многоцентрового рандомизированного исследования.</p><sec><title>Материал и методы</title><p>Материал и методы. Больным исследуемой группы на первом этапе лечения была проведена конформная лучевая терапия (РОД 2 Гр, СОД 46 Гр) на фоне химиотерапии по схеме: Капецитабин в дозе 1850 мг/м2 в 2 приема в течение всего курса лучевой терапии и Оксалиплатин в дозе 85 мг/м2 в 1-й и 21-й дни курса. После 4–6-нед интервала и контрольного обследования при отсутствии прогрессирования заболевания пациентам планировался хирургический этап лечения (гастрэктомия либо субтотальная резекция желудка D2) и 4 цикла адъювантной химиотерапии по схеме FOLFOX4 или CAPOX.</p></sec><sec><title>Результаты</title><p>Результаты. В исследование включено 70 больных, из которых 35 составили исследуемую группу. Преобладали мужчины – 23 больных, возраст варьировал от 22 до 76 лет (медиана – 61 год). Опухоль наиболее часто локализовалась в средней трети желудка (n=19); в 5 случаях имело место тотальное поражение органа. Наиболее часто встречались язвенно- и диффузно-инфильтративные формы РЖ (n=29). По морфологическому строению опухоль была представлена высоко- и умереннодифференцированной аденокарциномой у 11 пациентов, низкодифференцированной аденокарциномой, включая перстневидно-клеточный рак (n=8), – у 24 пациентов. В соответствии с клиническими категориями T, N и M больные распределялись следующим образом: сТ3 – 22 пациента, сТ4а/b – 13; сN0 – 13, сN1 – 12, сN2–3 – 10; М0 – 35; стадия IIВ – 12, стадия III–IVА – 23 больных. Хирургическое лечение было выполнено в объеме гастрэктомии у 30, субтотальной резекции желудка – у 4 пациентов, во всех случаях объем лимфодиссекции соответствовал D2. Один больной не был оперирован в связи с прогрессированием опухоли. Выраженный лечебный патоморфоз (Ia и Ib степени) был выявлен у 47 % пациентов, в том числе полная морфологическая регрессия опухоли – у 5 (14,7 %) больных. Среди пациентов с выраженным лечебным патоморфозом выявлено статистически значимое преобладание менее распространенных опухолей (в соответствии с категорией урТ и стадией).</p></sec><sec><title>Заключение</title><p>Заключение. В целом у 62 % больных зарегистрировано уменьшение стадии опухолевого процесса по данным морфологического исследования, по сравнению с клинической стадией. С учетом данных мировой литературы, свидетельствующих о высоких показателях выживаемости у пациентов с раком желудка с выраженной морфологической регрессией опухоли, весьма актуальной задачей является оптимизация и внедрение в практику методики неоадъювантной терапии. </p></sec></abstract><trans-abstract xml:lang="en"><p>A multicenter randomized trial was conducted to assess histopathological response to neoadjuvant chemoradiotherapy in patients with locally advanced gastric cancer.</p><sec><title>Material and Methods</title><p>Material and Methods. Patients of the study group received conformal radiation therapy (total dose of 46 Gr/23 fractions) with concurrent chemotherapy consisted of capecitabine at a dose of 1850 mg/m2 twice daily during the whole course of radiotherapy, and oxaliplatin at a dose of 85 mg/m2 on days 1 and 21. After an interval of 4–6 weeks and a control examination, in the absence of disease progression, patients were scheduled for surgery (gastrectomy or D2 subtotal gastric resection) and 4 cycles of adjuvant chemotherapy according to the FOLFOX4 or CAPOX regimens.</p></sec><sec><title>Results</title><p>Results.The study included 70 patients, including of 35 patients in the study group. Men predominated (n=23), the age ranged from 22 to 76 years (median – 61 years). The middle third of the stomach was the most common tumor location (n=19); involvement of the entire stomach occurred in 5 cases. Ulcerative and diffuse infiltrative forms were the most common (n=29). Well-and moderately-differentiated adenocarcinoma was observed in 11 patients and poorly – differentiated adenocarcinoma in 24 patients, including signet ring-cell cancer (n=8). In accordance with the clinical T, N and M categories, patients were distributed as follows: T3 – 22 patients, T4a/b – 13; N0 – 13, N1 – 12, N2–3 – 10; M0 – 35; stage IIB – 12, and stage III–IVA – 23 patients. Gastrectomy was performed in 30 patients and subtotal resection of the stomach in 4 patients; D2 lymphodissection was performed in all cases. One patient was not operated on due to disease progression. Of the 47 patients achieving pathological response, 5 (14.7%) patients had a complete pathological response. Among patients achieving pathological response, a statistically significant predominance of less advanced tumors was found (in accordance with the ypT category and stage).</p></sec><sec><title>Conclusion</title><p>Conclusion. In general, a decrease in the pathological tumor stage compared to clinical stage was registered in 62 % of patients. Taking into account the data available in the world literature on high survival rates in patients with pathological complete regression, the optimization and implementation of neoadjuvant therapy techniques is of great importance. </p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>лечебный патоморфоз</kwd><kwd>рак желудка</kwd><kwd>неоадъювантная химиолучевая терапия</kwd><kwd>комбинированное лечение</kwd><kwd>многоцентровое рандомизированное исследование</kwd></kwd-group><kwd-group xml:lang="en"><kwd>pathological response gastric cancer</kwd><kwd>neoadjuvant chemoradiotherapy</kwd><kwd>combination treatment</kwd><kwd>multicenter randomized trial</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Rawla P., Barsouk A. 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