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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">clinendo</journal-id><journal-title-group><journal-title xml:lang="ru">Клиническая эндоскопия</journal-title><trans-title-group xml:lang="en"><trans-title>Filin’s Clinical endoscopy</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2415-7813</issn><publisher><publisher-name>"Global Media technology" Ltd</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">clinendo-534</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 СТАТЬИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL ARTICLES</subject></subj-group></article-categories><title-group><article-title>Вопросы диагностики и оценки злокачественности латерально распространяющейся опухоли толстой кишки (LST)</article-title><trans-title-group xml:lang="en"><trans-title>The problems of diagnosis and evaluation of malignancy of the colon cancer (LST)</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>Черных</surname><given-names>Д. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Chernykh</surname><given-names>D. A.</given-names></name></name-alternatives><email xlink:type="simple">cher_da@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>Мяукина</surname><given-names>Л. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Myaukina</surname><given-names>L. M.</given-names></name></name-alternatives><email xlink:type="simple">myaukinalm@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>Дуванский</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Duvanskiy</surname><given-names>V. A.</given-names></name></name-alternatives><email xlink:type="simple">iva4583@yandex.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ГБУЗ Ленинградская областная клиническая больница</institution></aff><aff xml:lang="en"><institution>Leningrad Regional Clinical Hospital</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Российский университет дружбы народов</institution></aff><aff xml:lang="en"><institution>Peoples' Friendship University of Russia</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2017</year></pub-date><pub-date pub-type="epub"><day>09</day><month>12</month><year>2025</year></pub-date><issue>2</issue><fpage>28</fpage><lpage>31</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Черных Д.А., Мяукина Л.М., Дуванский В.А., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Черных Д.А., Мяукина Л.М., Дуванский В.А.</copyright-holder><copyright-holder xml:lang="en">Chernykh D.A., Myaukina L.M., Duvanskiy V.A.</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://clinendo.elpub.ru/jour/article/view/534">https://clinendo.elpub.ru/jour/article/view/534</self-uri><abstract><p>Основные положения: латерально-распространяющаяся опухоль выделена в отдельную группу эпителиальных новообразований толстой кишки из-за ряда отличительных особенностей, в частности трудной обнаружения; для выявления и оценки особенности роста LST необходимо придерживаться методики колоноскопии; выделены 8 макрокритериев, уточняющих агрессивность опухоли, т.е. наличие и возможную глубину инвазии.</p></abstract><trans-abstract xml:lang="en"><p>Laterally spreading tumor (LST) is isolated in a separate group of epithelial neoplasias of the colon due to a number of distinctive features, in particular difficult detection; the physician should adhere to the colonoscopy technique to identify and evaluate the growth characteristics of LST; 8 signs are identified that specify the presence and possible depth of infestation.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>колоректальный рак</kwd><kwd>латеральное распространяющаяся опухоль</kwd><kwd>эндоскопическая визуализация</kwd><kwd>макроскопические признаки злокачественности</kwd></kwd-group><kwd-group xml:lang="en"><kwd>colorectal cancer</kwd><kwd>lateral spreading tumor</kwd><kwd>endoscopic visualization</kwd><kwd>macroscopic signs of malignancy</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">Злокачественные новообразования в России в 2012 году (заболеваемость и смертность). 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