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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">10.21294/1814-4861-2021-20-5-18-30</article-id><article-id custom-type="elpub" pub-id-type="custom">oncotomsk-1912</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>ВОЗМОЖНОСТИ КОМПЬЮТЕРНО-ТОМОГРАФИЧЕСКОЙ ПНЕВМОГАСТРОГРАФИИ В ОПРЕДЕЛЕНИИ СТЕПЕНИ РЕГРЕССА МЕСТНОРАСПРОСТРАНЕННОГО РАКА ЖЕЛУДКА ПОСЛЕ ПРОВЕДЕНИЯ НЕОАДЪЮВАНТНОЙ ХИМИОТЕРАПИИ</article-title><trans-title-group xml:lang="en"><trans-title>ROLE OF COMPUTED TOMOGRAPHY WITH PNEUMOGASTROGRAPHY IN DETERMINING THE REGRESSION GRADE OF LOCALLY ADVANCED GASTRIC CANCER AFTER NEOADJUVANT CHEMOTHERAPY</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5128-001X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Амелина</surname><given-names>И. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Amelina</surname><given-names>I. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>соискатель степени кандидата медицинских наук, научный сотрудник научного отделения  диагностической и интервенционной радиологии, </p><p>197758, г. Санкт-Петербург, пос. Песочный, ул. Ленинградская, 68</p></bio><bio xml:lang="en"><p>MD, Researcher of the Scientific Department of Diagnostic and Interventional Radiology,</p><p>68, Leningradskaya st., 197758, St. Petersburg</p></bio><email xlink:type="simple">dr.innamelina@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6641-7229</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Карачун</surname><given-names>А. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Karachun</surname><given-names>A. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор медицинских наук, доцент, заведующий отделением абдоминальной онкологии, руководитель научного отделения опухолей желудочно-кишечного тракта, </p><p>197758, г. Санкт-Петербург, пос. Песочный, ул. Ленинградская, 68</p></bio><bio xml:lang="en"><p>MD, DSc, Associate Professor, Head of the Department of Abdominal Oncology, Head of the Department ofTumors of the Gastrointestinal Tract,</p><p>68, Leningradskaya st., 197758, St. Petersburg</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/0000-0002-8022-6864</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Нестеров</surname><given-names>Д. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Nesterov</surname><given-names>D. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат медицинских наук, научный сотрудник, </p><p>197758, г. Санкт-Петербург, пос. Песочный, ул. Ленинградская, 68</p></bio><bio xml:lang="en"><p>MD, PhD, Researcher, </p><p>68, Leningradskaya st., 197758, St. Petersburg</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/0000-0003-4533-1658</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шевкунов</surname><given-names>Л. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Shevkunov</surname><given-names>L. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат медицинских наук, заведующий отделением лучевой диагностики, старший научныйсотрудник научного отделения диагностической и интервенционной радиологии, </p><p>197758, г. Санкт-Петербург, пос. Песочный, ул. Ленинградская, 68</p></bio><bio xml:lang="en"><p>MD, PhD, Head of Radiation Diagnostics Department, Scientific Branch of Diagnostic and Intervention  Radiology,</p><p>68, Leningradskaya st., 197758, St. Petersburg</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/0000-0002-2948-397X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Артемьева</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Artemieva</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат медицинских наук, доцент, заведующая патологоанатомическим отделением, руководитель научной лаборатории морфологии опухолей, </p><p>197758, г. Санкт-Петербург, пос. Песочный, ул. Ленинградская, 68</p></bio><bio xml:lang="en"><p>MD, PhD, Associate Professor, Head of the Pathological Department, Head of the Scientific Laboratory of Tumor Morphology,</p><p>68, Leningradskaya st., 197758, St. Petersburg</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/0000-0002-4131-6293</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Багненко</surname><given-names>С. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Bagnenko</surname><given-names>S. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор медицинских наук, доцент, руководитель научного отделения диагностической и интервенционной радиологии, </p><p>197758, г. Санкт-Петербург, пос. Песочный, ул. Ленинградская, 68</p></bio><bio xml:lang="en"><p>MD, DSc, Associate Professor, Head of the Scientific Department of Diagnostic and Interventional Radiology, </p><p>68, Leningradskaya st., 197758, St. Petersburg</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/0000-0002-5321-370X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Трофимов</surname><given-names>С. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Trofimov</surname><given-names>S. L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>врач-рентгенолог, </p><p>197758, г. Санкт-Петербург, пос. Песочный, ул. Ленинградская, 68</p></bio><bio xml:lang="en"><p>MD, Radiologist, </p><p>68, Leningradskaya st., 197758, St. Petersburg</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБУ «Национальный медицинский исследовательский центр онкологии им. Н.Н. Петрова» Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>N.N. Petrov National Medical Research Center of Oncology, the Ministry of Health of the Russian Federation</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>27</day><month>10</month><year>2021</year></pub-date><volume>20</volume><issue>5</issue><fpage>18</fpage><lpage>30</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Амелина И.Д., Карачун А.М., Нестеров Д.В., Шевкунов Л.Н., Артемьева А.С., Багненко С.С., Трофимов С.Л., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Амелина И.Д., Карачун А.М., Нестеров Д.В., Шевкунов Л.Н., Артемьева А.С., Багненко С.С., Трофимов С.Л.</copyright-holder><copyright-holder xml:lang="en">Amelina I.D., Karachun A.M., Nesterov D.V., Shevkunov L.N., Artemieva A.S., Bagnenko S.S., Trofimov S.L.</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/1912">https://www.siboncoj.ru/jour/article/view/1912</self-uri><abstract><sec><title>Введение</title><p>Введение. Мультимодальный подход в лечении местнораспространенного рака желудка с добавлением дополнительных системных или местных методов (таких как химиотерапия и лучевая терапия) оправдан и способствует улучшению выживаемости пациентов за счет снижения риска рецидива. Развитие противоопухолевой терапии диктует необходимость разработки систем оценки ответа опухоли на новые методы лечения.</p></sec><sec><title>Материал и методы</title><p>Материал и методы. В исследование вошли 162 пациента с местнораспространенным раком желудка, получавшие лечение в Национальном медицинском исследовательском центре онкологии имени Н.Н. Петрова с 2015 по 2018 г. Все пациенты были прооперированы в объеме субтотальной резекции желудка или гастрэктомии с лимфодиссекцией и предварительно прошли неоадъювантную полихимиотерапию. Возрастной диапазон составил 30–80 лет. Всем пациентам патоморфологически была определена степень ответа опухоли на проведенную химиотерапию с использованием четырехступенчатой патоморфологической системы степени ответа по классификации Японской ассоциации рака желудка (JGCA, 3rd English edition). Всем пациентам двукратно была проведена компьютерно-томографическая пневмогастрография: на этапе клинического стадирования перед неоадъювантной химиотерапией и после, непосредственно перед операцией. Для каждого пациента проанализировано 96 качественных и количественных биомаркеров визуализации опухоли и парагастральных лимфатических узлов.</p></sec><sec><title>Результаты</title><p>Результаты. Точность определения степени ответа TRG-0/1 с помощью компьютерно-томографической пневмогастрографии составила 82,6 %, TRG-1/2 – 90 %, TRG-2/3 – 88 %. обсуждение. Степень патоморфологического ответа опухоли на проведенное лечение является предиктором отдаленных результатов, однако может быть оценена только после анализа операционного материала, и данный маркер невозможно использовать при неоперабельных случаях и для корректировки химотерапевтического лечения. Изучение биомаркеров визуализации на основе количественных и качественных данных, отражающих гистопатологические особенности опухоли и лимфатических узлов, и их интеграция в клиническую практику могут помочь в определении степени ответа на проведенную терапию и оптимизации лечения.</p></sec><sec><title>Заключение</title><p>Заключение. Предложенный алгоритм оценки степени ответа местнораспространенного рака желудка на химиотерапию (ctTRG) с помощью биомаркеров визуализации в рамках настоящего пилотного исследования является перспективным прогностическим маркером и требует дальнейшего изучения. </p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. A multimodal approach to the treatment of locally advanced gastric cancer with the addition of systemic or local treatment methods, such as chemotherapy and radiation therapy, reduces the risk of cancer recurrence, thus improving survival of patients. Advances in anticancer therapy dictate the need to develop systems for assessing tumor response to new treatment modalities.</p></sec><sec><title>Material and Methods</title><p>Material and Methods. The study included 162 patients with locally advanced gastric cancer who received treatment at the N.N. Petrov National Medical Research Center of Oncology from 2015 to 2018. All patients underwent subtotal gastric resection or gastrectomy with lymph node dissection and previously received neoadjuvant polychemotherapy. Patients were in the age range 30 to 80 years old. The tumor pathomorphological response to chemotherapy was assessed in all patients using a pathomorphological response rate system according to the classification of the Japanese Gastric Cancer Association (JGCA, 3rd English edition). All patients underwent computed tomography with pneumogastrography before neoadjuvant chemotherapy and immediately before surgery. For each of 162 patients, 96 qualitative and quantitative biomarkers of tumor and paragastric lymph node imaging were analyzed.</p></sec><sec><title>Results</title><p>Results. The accuracy of determining the tumor response rate using computed tomography with pneumogastrography was 82.6 % for TRG-0/1, 90 % for TRG-1/2, and 88 % for TRG-2/3. Discussion. The tumor pathomorphological response to treatment is a predictor of long-term results; however, it can be assessed only after analyzing the surgical specimen, and this marker cannot be used in inoperable cases and for correction of palliative chemotherapy. The study of imaging biomarkers based on quantitative and qualitative data reflecting the histopathological features of the tumor and lymph nodes can help determine the tumor regression grade and optimize treatment.</p></sec><sec><title>Conclusion</title><p>Conclusion. The proposed algorithm for assessing the response grade of locally advanced gastric cancer to chemotherapy using imaging biomarkers is a promising prognostic marker and requires further study. </p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>рак желудка</kwd><kwd>неоадъювантная терапия</kwd><kwd>лечебный патоморфоз</kwd><kwd>степень регресса опухоли</kwd><kwd>биомаркеры визуализации</kwd><kwd>компьютерно-томографическая пневмогастрография</kwd></kwd-group><kwd-group xml:lang="en"><kwd>gastric cancer</kwd><kwd>neoadjuvant therapy</kwd><kwd>pathological response</kwd><kwd>tumor regression grade</kwd><kwd>imaging biomarkers</kwd><kwd>computed tomography with pneumogastrography</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">International Agency for Research on Cancer Global Cancer Observatory [Internet]. 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