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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="other" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Surgery and Oncology</journal-id><journal-title-group><journal-title xml:lang="en">Surgery and Oncology</journal-title><trans-title-group xml:lang="ru"><trans-title>Хирургия и онкология</trans-title></trans-title-group></journal-title-group><issn publication-format="electronic">2949-5857</issn><publisher><publisher-name xml:lang="en">Publishing House ABV Press</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">214</article-id><article-id pub-id-type="doi">10.17650/2220-3478-2017-7-2-11-19</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>ORIGINAL REPORTS</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></subject></subj-group></article-categories><title-group><article-title xml:lang="en">The choice of optimal lymph node dissection extent in surgical treatment for colon cancer: protocol the clinical trial</article-title><trans-title-group xml:lang="ru"><trans-title>Выбор оптимального объема лимфодиссекции в хирургическом лечении рака ободочной кишки: протокол клинического исследования</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Karachun</surname><given-names>A. M.</given-names></name><name xml:lang="ru"><surname>Карачун</surname><given-names>А. М.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>dr.a.karachun@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Panayotti</surname><given-names>L. L.</given-names></name><name xml:lang="ru"><surname>Панайотти</surname><given-names>Л. Л.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>dr.a.karachun@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Petrov</surname><given-names>A. S.</given-names></name><name xml:lang="ru"><surname>Петров</surname><given-names>А. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>dr.a.karachun@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">N.N. Petrov National Medical Research Oncology Center, Ministry of Health of Russia</institution></aff><aff><institution xml:lang="ru">ФГБУ «Национальный медицинский исследовательский центр онкологии им. Н.Н. Петрова» Минздрава России</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2017-09-28" publication-format="electronic"><day>28</day><month>09</month><year>2017</year></pub-date><volume>7</volume><issue>2</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>11</fpage><lpage>19</lpage><history><date date-type="received" iso-8601-date="2017-09-28"><day>28</day><month>09</month><year>2017</year></date><date date-type="accepted" iso-8601-date="2017-09-28"><day>28</day><month>09</month><year>2017</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2017, ABV-press</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2017, АБВ-пресс</copyright-statement><copyright-year>2017</copyright-year><copyright-holder xml:lang="en">ABV-press</copyright-holder><copyright-holder xml:lang="ru">АБВ-пресс</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://onco-surgery.info/jour/about/editorialPolicies</ali:license_ref></license></permissions><self-uri xlink:href="https://onco-surgery.info/jour/article/view/214">https://onco-surgery.info/jour/article/view/214</self-uri><abstract xml:lang="en"><p>Background. The choice of the best surgical approach to colon cancer treatment remains a complicated and controversial problem of modern coloproctology. Current data shows better long-term outcomes after procedures performed in accordance with embryological layers and concept of complete mesocolic excision, while level of vessel ligation remains debatable. In the US and Europe D3 lymph node dissection is not routinely performed for colon cancer, while in eastern countries it is considered to be a standard. Up-to-date there is no published data from randomized trials comparing long-term outcomes of D2 and D3 dissection. Materials and methods. A literature review was performed to evaluate current data on colon cancer lymph node dissection. A design of ran-domized trial was proposed to obtain the evidence on the superiority of D3 over D2 lymph node dissection. Discussion. As evidence regarding long-term outcomes of D3 lymph node dissection is lacking the choice of lymph node dissection is made according to surgeon’s or clinic preferences. Conclusion. To objectify the preferred lymph node dissection extent randomized controlled studies are needed.</p><p> </p><p> </p></abstract><trans-abstract xml:lang="ru"><p/></trans-abstract><kwd-group xml:lang="en"><kwd>colon cancer</kwd><kwd>complete mesocolic excision</kwd><kwd>lymph node dissection D2, D3</kwd><kwd>randomized trial</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>рак ободочной кишки</kwd><kwd>тотальная мезоколонэктомия</kwd><kwd>лимфодиссекция D2, D3</kwd><kwd>рандомизированное исследование</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">1. Rectum J.R. General rules for clinical and pathological studies on cancer of the colon, rectum and anus. Part II. 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