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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">nogr</journal-id><journal-title-group><journal-title xml:lang="ru">Экспериментальная и клиническая гастроэнтерология</journal-title><trans-title-group xml:lang="en"><trans-title>Experimental and Clinical Gastroenterology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1682-8658</issn><publisher><publisher-name>«Global Media Technologies»</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">nogr-682</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>КЛИНИЧЕСКИЙ СЛУЧАЙ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CLINICAL CASE</subject></subj-group></article-categories><title-group><article-title>КРИТЕРИИ ДИАГНОСТИКИ ЗУБЧАТОЙ АДЕНОКАРЦИНОМЫ ТОЛСТОЙ КИШКИ</article-title><trans-title-group xml:lang="en"><trans-title>SERRATED COLORECTAL ADENOCARCINOMA</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>Нечипай</surname><given-names>А. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Nechipay</surname><given-names>A. M.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.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>Шишин</surname><given-names>К. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Shishin</surname><given-names>K. V.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Зобнина</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Zobnina</surname><given-names>M. V.</given-names></name></name-alternatives><email xlink:type="simple">dudka-m@mail.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Черкасова</surname><given-names>Л. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Cherkasova</surname><given-names>L. M.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кривопусков</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Krivopuskov</surname><given-names>V. A.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-4"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ГБОУ ДПО РМАПО Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Russian Medical Academy of Postgraduate Aducation</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ГБУЗ МКНЦ ДЗМ</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Moscow Clinical Research Center</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>ФГБУ «Поликлиника № 1» УДП РФ</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Polyclinic № 1 of the Business Administration for the President of the Russian Federation</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>ГКБ № 57</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Municipal Hospital № 57</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2016</year></pub-date><pub-date pub-type="epub"><day>20</day><month>03</month><year>2016</year></pub-date><volume>0</volume><issue>3</issue><fpage>47</fpage><lpage>50</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Нечипай А.М., Шишин К.В., Зобнина М.В., Черкасова Л.М., Кривопусков В.А., 2016</copyright-statement><copyright-year>2016</copyright-year><copyright-holder xml:lang="ru">Нечипай А.М., Шишин К.В., Зобнина М.В., Черкасова Л.М., Кривопусков В.А.</copyright-holder><copyright-holder xml:lang="en">Nechipay A.M., Shishin K.V., Zobnina M.V., Cherkasova L.M., Krivopuskov 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://www.nogr.org/jour/article/view/682">https://www.nogr.org/jour/article/view/682</self-uri><abstract><p>Цель: Описать клинический случай эндоскопической диагностики зубчатой аденокарциномы толстой кишки. Показать основные морфологические и генетические характеристики опухолей данного типа, определить тактику ведения пациентов с данной патологией. Заключение: С 2010 года зубчатые неоплазии по праву относятся к предопухолевым изменениям. В 10-15% случаев они являются предшественниками спорадического колоректального рака (КРР), развивающегося по альтернативному - зубчатому пути. Данный тип опухоли получил название - зубчатая аденокарцинома. Злокачественные образования, возникающие на фоне зубчатых неоплазий, имеют определенные микроскопические и генетические признаки, что позволяет провести их дифференциальную диагностику с КРР, который развивается в результате малигнизации типичных аденом. Зубчатые аденокарциномы, в отличие от типичного КРР, характеризуются высоким уровнем микросателлитной нестабильности (MSI-H), имеют положительный CIMP фенотип (CpG island methylator phenotype, CIMP+), наличие последнего позволяет провести дифференциальную диагностику с опухолями при синдроме Линча. Присутствие в опухоли микросателлитной нестабильности ассоциировано с целым рядом клинически значимых признаков. КРР с микросателлитной нестабильностью имеет относительно благоприятный прогноз, так как высокая частота соматических мутаций способствует иммуногенности опухоли. Кроме того, данный тип образований чаще отвечает на терапию с применением фторпиримидинов, ввиду того, что характеризуется сниженной способностью к компенсации повреждений ДНК.</p></abstract><trans-abstract xml:lang="en"><p>The aim. To present a clinical case of serrated colon adenocarcinoma. To demonstrate morphological and genetic features of these tumors and to determine their clinical management. Key points. Described case shows diagnostics of serrated colon adenocarcinoma. A 67-year-old woman presented for colonoscopy because of long constipation besides abdominal pain and distention have appeared recently. Colonoscopy was performed and she was found to have a 3.0x3.0-cm tumor next to hepatic flexure and pedunculated 1.2х0.7 cm polyp in sigmoid colon (type Ip according to Paris classification). Endoscopic biopsies of these lesions were consistent with serrated adenocarcinoma and tubulovillous adenoma with foci of severe dysplasia. Additional diagnostic methods revealed no distant metastases. Patient was underwent right hemicolectomy with D3 lymphodissection, lesion in sigmoid colon was removed using snare with electrocautery. Final pathology revealed no residual tissue in margins and no malignant cells in removed lymph nodes. Genetic diagnostics by PCR found high level of microsatellite instability and positive CpG island methylator phenotype (CIMP+) in tumor tissue. Conclusions. According to WHO classification serrated lesion are considered to have malignant potential. They serve as the precursors for approximately 10% to 15% of sporadic colorectal cancer developed through the serrated pathway. These tumors were named serrated adenocarcinoma and had special morphological criteria that allow us to differentiate them with colorectal adenocarcinomas developed through the traditional pathway. Serrated adenocarcinoma has high level of microsatellite instability and positive CpG island methylator phenotype (CIMP+). Presence of microsatellite instability in tumor determines its more favorable prognosis because of tumor immunogenicity. Besides this type of canсer is more often responding to therapy with fluoropyrimidines.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>колоректальный рак</kwd><kwd>зубчатая аденокарцинома</kwd><kwd>микросателлитная нестабильность</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Colorectal cancer</kwd><kwd>serrated adenocarcinoma</kwd><kwd>microsatellite instability</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">Давыдов М. И., Аксель Е. М. Вестник РОНЦ им. Н. Н. Блохина РАМН, 2011, т. 22, № 3 (85) (прил. 1).</mixed-citation><mixed-citation xml:lang="en">Давыдов М. И., Аксель Е. М. Вестник РОНЦ им. Н. Н. Блохина РАМН, 2011, т. 22, № 3 (85) (прил. 1).</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Davidov M. I., Aksel E. M. Journal of Russian Cancer Research Center named N. N. 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