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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">tumors</journal-id><journal-title-group><journal-title xml:lang="ru">Malignant tumours</journal-title><trans-title-group xml:lang="en"><trans-title>Malignant tumours</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2224-5057</issn><issn pub-type="epub">2587-6813</issn><publisher><publisher-name>Rosoncoweb</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.18027/2224-5057-2021-11-2-13-26</article-id><article-id custom-type="elpub" pub-id-type="custom">tumors-840</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>ОРИГИНАЛЬНЫЕ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL REPORTS</subject></subj-group></article-categories><title-group><article-title>Компьютерно-томографическая пневмогастрография в определении типов рака желудка по классификации Lauren</article-title><trans-title-group xml:lang="en"><trans-title>Computed tomographic pneumogastrography in determining the types of gastric cancer according to the Lauren classification</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><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>A. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Амелина Инна Д. - соискатель степени кандидата медицинских наук, научный сотрудник научного отделения диагностической и интервенционной радиологии, врач-рентгенолог.</p><p>Санкт-Петербург.</p></bio><bio xml:lang="en"><p>Inna D. Amelina - MD, radiologist, Researcher of the Scientific Department of Diagnostic and Interventional Radiology, National Medical Research Center of Oncology named after N.N. Petrov.</p><p> Saint 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"><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>Нестеров Денис В. - кандидат медицинских наук, научный сотрудник, врач-рентгенолог.</p><p>Санкт-Петербург.</p></bio><bio xml:lang="en"><p>Denis V. Nesterov - MD, PhD, Researcher, Radiologist, National Medical Research Center of Oncology named after N.N. Petrov.</p><p>Saint Petersburg.</p></bio><email xlink:type="simple">cireto@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><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>Шевкунов Лев Н. – кандидат медицинских наук, заведующий отделением лучевой диагностики, старший научный сотрудник научного отделения диагностической и интервенционной радиологии, врач-рентгенолог.</p><p>Санкт-Петербург.</p></bio><bio xml:lang="en"><p>Lev N. Shevkunov - MD, PhD, Radiologist, Head of Radiation Diagnostics Department, Senior Research Fellow, Department of Diagnostic and Intervention Radiology, National Medical Research Center of Oncology named after N.N. Petrov.</p><p>Saint Petersburg.</p></bio><email xlink:type="simple">levka1978@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><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>Карачун Алексей М. - доктор медицинских наук, заведующий отделением абдоминальной онкологии, руководитель научного отделения опухолей желудочно-кишечного тракта, доцент, врач-онколог.</p><p>Санкт-Петербург.</p></bio><bio xml:lang="en"><p>Aleksey M. Karachun - MD, PhD, DSc, Head of the Department of Abdominal Oncology, Head of the Scientific Department of the Tumors of the Gastrointestinal Tract, Assistant Professor, Oncologist, National Medical Research Center of Oncology named after N.N. Petrov.</p><p>Saint Petersburg.</p></bio><email xlink:type="simple">dr.a.karachun@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><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>Artemyeva</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Артемьева Анна С. – кандидат медицинских наук, доцент, заведующий патологоанатомическим отделением, руководитель научной лаборатории морфологии опухолей.</p><p>Санкт-Петербург.</p></bio><bio xml:lang="en"><p>Anna S. Artemyeva - MD, PhD, Assistant Professor, Head of the Pathological Department, Head of the Scientific Laboratory of Tumor Morphology, National Medical Research Center of Oncology named after N.N. Petrov.</p><p>Saint Petersburg.</p></bio><email xlink:type="simple">oinochoya@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><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>Багненко Сергей С. – доктор медицинских наук, доцент, руководитель научного отделения диагностической и интервенционной радиологии.</p><p>Санкт-Петербург.</p></bio><bio xml:lang="en"><p>Sergei S. Bagnenko - MD, PhD, DSc, Assistant Professor, Head of the Scientific Department of Diagnostic and Interventional Radiology, National Medical Research Center of Oncology named after N.N. Petrov.</p><p>Saint Petersburg.</p></bio><email xlink:type="simple">bagnenko_ss@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><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>Трофимов Станислав Л. - врач-рентгенолог.</p><p>Санкт-Петербург.</p></bio><bio xml:lang="en"><p>Stanislav L. Trofimov - MD, Radiologist, National Medical Research Center of Oncology named after N.N. Petrov.</p><p>Saint Petersburg.</p></bio><email xlink:type="simple">trofimov.stanislav@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>НМИЦ онкологии имени Н.Н. Петрова Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National Medical Research Center of Oncology named after N.N. Petrov</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>03</day><month>11</month><year>2021</year></pub-date><volume>11</volume><issue>2</issue><elocation-id>13‑26</elocation-id><permissions><copyright-statement>Copyright &amp;#x00A9; Амелина И.Д., Нестеров Д.В., Шевкунов Л.Н., Карачун А.М., 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., Нестеров Д.В., Шевкунов Л.Н., Карачун А.М., Артемьева А.С., Багненко С.С., Трофимов С.Л.</copyright-holder><copyright-holder xml:lang="en">Amelina A.D., Nesterov D.V., Shevkunov L.N., Karachun A.M., Artemyeva 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.malignanttumors.org/jour/article/view/840">https://www.malignanttumors.org/jour/article/view/840</self-uri><abstract><sec><title>Цель</title><p>Цель. Оценить возможности компьютерно-томографической пневмогастрографии в определении типов рака желудка по классификации Lauren на этапе клинического стадирования.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. Данное одноцентровое ретроспективное исследование включает 202 больных раком желудка, получавших лечение в Национальном Медицинском Исследовательском Центре онкологии имени Н.Н. Петрова с 2015 по 2018 гг. Все пациенты были прооперированы в объеме субтотальной резекции желудка или гастрэктомии. Всем пациентам на этапе клинического стадирования была проведена компьютерно-томографическая пневмогастрография. Пациентам, которым проводилась неоадъювантная химиотерапия, КТ выполнялась двукратно: перед химиотерапией и после, непосредственно перед операцией. Изучались количественные и качественные биомаркеры визуализации, проводилось измерение денситометрических показателей плотности опухоли желудка в артериальную, портальную и отсроченную фазы сканирования в пяти разных точках. Для пациентов, получавших НАПХТ, все показатели плотности фиксировались двукратно — до начала терапевтического лечения и после, непосредственно перед операцией.</p></sec><sec><title>Результаты</title><p>Результаты. Распределение типов рака желудка по классификации Lauren было следующим: у 59 (29,2%) был определен кишечный тип, 69 (34,2%) — диффузный, 16 (7,9%) — смешанный, 58 (28,7%) — неопределенный тип. На основе визуальных характеристик с учетом особенностей роста опухоли выделены 3 основных КТ-ПГГ типа РЖ: 1 — бугристый (68,3%), 2 — интрамуральный (57,3%) и 3 — смешанный (77,4%). КТ-ПГГ тип опухоли связан с типом по Lauren (χ2 =185,19, p &lt;0,001). При бугристом КТ-ПГГ типе возможно предположить, что опухоль имеет кишечный или неопределенный тип по Lauren; чувствительность 0,58 (95% ДИ: 0,49-0,67), специфичность 0,1 (95% ДИ: 0,96-0,1). При интрамуральном КТ-ПГГ типе наиболее вероятен диффузный тип опухоли по Lauren; чувствительность 0,75 (95% ДИ: 0,64-0,85), специфичность 0,96 (95% ДИ: 0,91-0,99). При смешанном КТ-ПГГ типе определение типа по Lauren затруднено. В определении смешанного типа опухоли по Lauren чувствительность и специфичность смешанного КТ-ПГГ типа опухоли составляет 0,94 (95% ДИ: 0,70%-0,1) и0,67 (95% ДИ: 0,59-0,73) соответственно.</p></sec><sec><title>Заключение</title><p>Заключение. Форма опухоли желудка, определяемая при КТ-ПГГ, имеет высокую диагностическую эффективность в определении типов РЖ по Lauren. Бугристый КТ-ПГГ тип является типичным для опухолей кишечного типа по Lauren, а интрамуральный КТ-ПГГ тип характерен для опухолей диффузного типа по Lauren. Опухоли неопределенного типа по Lauren имеют любой КТ-ПГГ тип и паттерн контрастирования. Для опухолей смешанного типа по Lauren характерен смешанный тип по КТ-ПГГ, но дифференциальный диагноз с опухолями бугристого и диффузного типа по Lauren атипичной для них формы невозможен. Опухоли кишечного и диффузного типа по Lauren не характерного для них КТ-ПГГ типа имеют атипичный паттерн контрастирования.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Objective</title><p>Objective. To assess the capabilities of computed tomographic pneumogastrography in determining the types of gastric cancer according to the Lauren classification at the stage of clinical staging.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. This study is a single-center retrospective study with 202 patients with gastric cancer included who was treated at the National Medical Research Center of Oncology named after N. N. Petrov from 2015 to 2018. All patients underwent subtotal gastric resection or gastrectomy and computed tomographic pneumogastrography at the stage of clinical staging. For patients undergoing neoadjuvant chemotherapy, CT was performed twice: before chemotherapy and after, immediately before surgery. We studied quantitative and qualitative imaging biomarkers, measured densitometric indices of stomach tumor density in the arterial, portal and delayed phases of scanning at five different points. For patients receiving NACT, all density indices were recorded twice — both before the start of therapeutic treatment, and after, immediately before the surgery.</p></sec><sec><title>Results</title><p>Results. The distribution of gastric cancer types according to Lauren»s classification was as follows: in 59 (29,2 %) intestinal type, 69 (34,2 %) — diffuse, 16 (7,9 %) — mixed, 58 (28,7 %) — indeterminate type. Based on visual characteristics, taking into account the characteristics of tumor growth, 3 main CT-PGG of the gastric cancer type were identified: 1 — tuberous (n = 68, 34,0 %), 2 — intramural (n = 57,3 %) and 3 — mixed (n = 77,4 %). CT-PGG tumor type is associated with Lauren type (χ2 = 185,19, p &lt;0,001). With a tuberous CT-PGG type, it is possible to assume that the tumor is of an intestinal or indeterminate Lauren type; sensitivity 0,58 (95% CI: 0,49-0,67), specificity 0,1 (95% CI: 0,96-0,1). With an intramural CT-PGG type, the diffuse type of tumor according to Lauren is most likely; sensitivity 0,75 (95% CI: 0,64-0,85), specificity 0,96 (95% CI: 0,91-0,99). With a mixed CT-PGG type, the definition of the type according to Lauren is difficult. In the definition of mixed tumor type according to Lauren, the sensitivity and specificity of mixed CT-PGG tumor type are 0,94 (95% CI: 0,70% -0,1) and 0,67 (95% CI: 0,59-0,73) respectively.</p></sec><sec><title>Conclusion</title><p>Conclusion. The shape of the stomach tumor, determined by CT-PGG, has a high diagnostic efficiency in determining the types of gastric cancer according to Lauren. The tuberous CT-PGG type is typical for tumors of the intestinal type according to Lauren, and the intramural CT-PGG type is typical for tumors of the diffuse type according to Lauren. Tumors of indeterminate Lauren type have any CT-PGG type and contrast pattern. For tumors of a mixed type according to Lauren, a mixed type according to CT-PGG is characteristic, but differential diagnosis with tumors of a tuberous and diffuse type according to Lauren of an atypical form for them is impossible. Tumors of the intestinal and diffuse Lauren type of the CT-PGG type, which is not typical for them, have an atypical contrast pattern.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>рак желудка</kwd><kwd>классификация рака желудка по Lauren</kwd><kwd>диффузный рак желудка</kwd><kwd>биомаркеры визуализации</kwd><kwd>денситометрические показатели плотности</kwd><kwd>компьютерная томография</kwd><kwd>компьютерно-томографическая пневмогастрография</kwd></kwd-group><kwd-group xml:lang="en"><kwd>gastric cancer</kwd><kwd>Lauren classification of gastric cancer</kwd><kwd>diffuse gastric cancer</kwd><kwd>imaging biomarkers</kwd><kwd>densitometric density indices</kwd><kwd>computed tomography</kwd><kwd>computed tomographic 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">Sung H., Ferlay J., Siege R. L., Laversanne M., Soerjomataram I., Jemal A. et al. 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