<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE article PUBLIC "-//NLM//DTD JATS (Z39.96) Journal Publishing DTD v1.3 20210610//EN" "JATS-journalpublishing1-3.dtd">
<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">gnck</journal-id><journal-title-group><journal-title xml:lang="ru">Колопроктология</journal-title><trans-title-group xml:lang="en"><trans-title>Koloproktologia</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2073-7556</issn><issn pub-type="epub">2686-7303</issn><publisher><publisher-name>Russian Association of Coloproctology</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.33878/2073-7556-2021-20-3-72-76</article-id><article-id custom-type="elpub" pub-id-type="custom">gnck-1652</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 НАБЛЮДЕНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CASE REPORT</subject></subj-group></article-categories><title-group><article-title>Плоскоклеточная метаплазия слизистой оболочки прямой кишки у пациентов с длительным анамнезом язвенного колита (серия клинических случаев)</article-title><trans-title-group xml:lang="en"><trans-title>Squamous cell metaplasia of the rectum associated with a longstanding ulcerative colitis (clinical cases report)</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0544-0027</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Архипова</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Arkhipova</surname><given-names>O. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Архипова О.В.</p><p>ул. Саляма Адиля, д. 2, г. Москва, 123423</p></bio><bio xml:lang="en"><p>Olga V. Arkhipova</p><p>Salyama Adilya str., 2, Moscow, 123423</p></bio><email xlink:type="simple">polikarpova-e@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4533-6555</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Васильевых</surname><given-names>Т. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Vasilyevykh</surname><given-names>T. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Васильевых Т.А.</p><p>ул. Саляма Адиля, д. 2, г. Москва, 123423</p></bio><bio xml:lang="en"><p>Tatyana A. Vasilyevykh</p><p>Salyama Adilya str., 2, Moscow, 123423</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/0000-0001-9992-119X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Веселов</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Veselov</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Веселов В.В.</p><p>ул. Саляма Адиля, д. 2, г. Москва, 123423</p></bio><bio xml:lang="en"><p>Viktor V. Veselov</p><p>Salyama Adilya str., 2, Moscow, 123423</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/0000-0001-8189-3071</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Майновская</surname><given-names>О. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Mainovskaya</surname><given-names>O. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Майновская О.А.</p><p>ул. Саляма Адиля, д. 2, г. Москва, 123423</p></bio><bio xml:lang="en"><p>Olga A. Mainovskaya</p><p>Salyama Adilya str., 2, Moscow, 123423</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБУ «НМИЦ колопроктологии им. А.Н.Рыжих» Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Ryzhikh National Medical Research Center of Coloproctology</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>21</day><month>09</month><year>2021</year></pub-date><volume>20</volume><issue>3</issue><fpage>72</fpage><lpage>76</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Архипова О.В., Васильевых Т.А., Веселов В.В., Майновская О.А., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Архипова О.В., Васильевых Т.А., Веселов В.В., Майновская О.А.</copyright-holder><copyright-holder xml:lang="en">Arkhipova O.V., Vasilyevykh T.A., Veselov V.V., Mainovskaya O.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.ruproctology.com/jour/article/view/1652">https://www.ruproctology.com/jour/article/view/1652</self-uri><abstract><p>ВВЕДЕНИЕ: плоскоклеточная метаплазия слизистой оболочки прямой кишки встречается у пациентов с хроническим воспалением или инфекционным поражением [<xref ref-type="bibr" rid="cit1">1</xref>]. В диагностике плоскоклеточной метаплазии основную роль играет проведение эндоскопического исследования, особенно с использованием узкого спектра света, который позволяет прицельно визуализировать внутриэпителиальные капиллярные петли, характерные для плоского эпителия [1,2]. В данной статье у пациентов с длительным анамнезом язвенного колита описаны клинические наблюдения, выявленной при колоноскопии плоскоклеточной метаплазии слизистой оболочки прямой кишки, которые могут служить источником развития плоскоклеточного рака.КЛИНИЧЕСКИЕ СЛУЧАИ: развитие плоскоклеточной метаплазии слизистой оболочки прямой кишки у пациентов с длительным анамнезом язвенного колита (9 и 14 лет). При проведении колоноскопии у обоих пациентов была верифицирована тотальная форма язвенного колита. На фоне эндоскопической ремиссии в нижнеампулярном отделе прямой кишки были обнаружены плоские белесоватые участки, неправильной формы, размерами до 3 см, в виде «языков» метаплазированного эпителия, имеющих четкие границы. При осмотре в узком спектре света (режим NBI и BLI) микрососудистый рисунок в выявленных участках по строению был идентичен микрососудистому рисунку, характерному для плоского эпителия. Результаты морфологического исследования биоптатов из диагностированных участков подтвердили наличие плоского эпителия.ЗАКЛЮЧЕНИЕ: у пациентов с длительным анамнезом язвенного колита встречается плоскоклеточная метаплазия слизистой оболочки прямой кишки, которую можно выявить при колоноскопии в белом свете. Использование осмотра в узком спектре света с последующей прицельной биопсией позволяют наиболее точно установить диагноз. Пациенты данной группы требуют динамического эндоскопического наблюдения с использованием вышеперечисленных методик, так как участки метаплазии могут служить источником образования плоскоклеточного рака прямой кишки.</p></abstract><trans-abstract xml:lang="en"><p>INTRODUCTION: squamous cell metaplasia in the rectum is found in patients with longstanding inflammation or infectious lesions [<xref ref-type="bibr" rid="cit1">1</xref>]. Colonoscopy plays a major role in the diagnostic of squamous cell metaplasia, especially with the use of Narrow Band Imaging (NBI) or Blue Light Imagining (BLI), which allows for targeted visualization of intraepithelial capillary loopspeculiar for the squamous epithelium [1,2]. The final conclusion cannot be reached without morphological diagnostics. We would like to show on two clinical cases of patients with a longstanding ulcerative colitis the occurrence of squamous cell metaplasia in the rectum. These areas of metaplasia may be the source of squamous cell cancer.CLINICAL CASES: a clinical cases of squamous cell metaplasia in the rectum in two patients with a longstanding ulcerative colitis (9 and 14 years) are presented. The total ulcerative colitis was verified in both patients by colonoscopy. Against the background of endoscopic remission, flat whitish areas of irregular shape, up to 3 cm in size, in the form of “tongues” of metaplastic epithelium with clear boundaries were found in the low rectum. When examined in a Narrow Band Imaging (NBI) and Blue Light Imagining (BLI), the microvascular pattern in the detected areas was identical in structure to the microvascular pattern of the squamous epithelium. The biopsies confirmed the presence of squamous cell epithelium.CONCLUSION: patients with a longstanding ulcerative colitis may have squamous cell metaplasia of the rectal mucosa, which can be detected by colonoscopy in white light. Using a Narrow Band Imaging (NBI) followed by a targeted biopsy allows the most accurate diagnosis to be established. Patients of this group require repeated colonoscopies using the above methods, since areas of metaplasia can be a source of squamous cell cancer of the rectum.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>колоноскопия</kwd><kwd>язвенный колит</kwd><kwd>плоскоклеточная метаплазия</kwd><kwd>плоскоклеточный рак</kwd></kwd-group><kwd-group xml:lang="en"><kwd>colonoscopy</kwd><kwd>ulcerative colitis</kwd><kwd>squamous cell metaplasia</kwd><kwd>squamous cell carcinoma</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">Nishi T, Weinstein W, Makuuchi H. Squamous cell metaplasia in the rectum: a case report and review of the medical literature. Tokai J Exp Clin Med. 2004;29:163–166.</mixed-citation><mixed-citation xml:lang="en">Nishi T, Weinstein W, Makuuchi H. Squamous cell metaplasia in the rectum: a case report and review of the medical literature. Tokai J Exp Clin Med. 2004;29:163–166.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">L.Richard M, McCom M. Squamous cell carcinoma of the rectum: Report of a case complicating chronic ulcerative colitis. Dis Colon Rectum. 1963;6:370–373. DOI: 10.1007/BF02618400</mixed-citation><mixed-citation xml:lang="en">L.Richard M, McCom M. Squamous cell carcinoma of the rectum: Report of a case complicating chronic ulcerative colitis. Dis Colon Rectum. 1963;6:370–373. DOI: 10.1007/BF02618400</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Chen F, Fink R, Machet D. Squamous metaplasia of the rectum: a surgical curiosity. Eur J Surg. 1996;162:155–156.</mixed-citation><mixed-citation xml:lang="en">Chen F, Fink R, Machet D. Squamous metaplasia of the rectum: a surgical curiosity. Eur J Surg. 1996;162:155–156.</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Polivy C. Rosenthal I. Squamous metaplasia and papilomatosis of the rectum. Arch Surg. 1964;89:1077–1082. DOI: 10.1001/archsurg. 1964.01320060145026</mixed-citation><mixed-citation xml:lang="en">Polivy C. Rosenthal I. Squamous metaplasia and papilomatosis of the rectum. Arch Surg. 1964;89:1077–1082. DOI: 10.1001/archsurg. 1964.01320060145026</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Cabrera A, Pickren J. Squamous metaplaisa and squamous cell carcinoma of the rectosigmoid. Dis Colon Rectum. 1967;10:288–290. DOI: 10.1007/BF02617142</mixed-citation><mixed-citation xml:lang="en">Cabrera A, Pickren J. Squamous metaplaisa and squamous cell carcinoma of the rectosigmoid. Dis Colon Rectum. 1967;10:288–290. DOI: 10.1007/BF02617142</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Fu K, Tsujinaka Y, Hamahata Y. et al. Squamous metaplasia of the rectum associated with ulcerative colitis diagnosed using narrow−band imaging. Endoscopy. 2008;40:E45–E46. DOI: 10.1055/s-2007-966861</mixed-citation><mixed-citation xml:lang="en">Fu K, Tsujinaka Y, Hamahata Y. et al. Squamous metaplasia of the rectum associated with ulcerative colitis diagnosed using narrow−band imaging. Endoscopy. 2008;40:E45–E46. DOI: 10.1055/s-2007-966861</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Maruoka T, Hasegawa K, Nagasako K. Squamous cell metaplasia without dysplasia of the colonic mucosa in ulcerative colitis. Gastrointest Endosc. 1990;36:65–66. DOI: 10.1016/s0016-5107(90)70929-7</mixed-citation><mixed-citation xml:lang="en">Maruoka T, Hasegawa K, Nagasako K. Squamous cell metaplasia without dysplasia of the colonic mucosa in ulcerative colitis. Gastrointest Endosc. 1990;36:65–66. DOI: 10.1016/s0016-5107(90)70929-7</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Lightner A. Human Papilloma Virus and Anal Squamous Cell Cancer in IBD: Is It Time to Update Our Practice Parameters. Dis Colon Rectum. 2017;60(12):1231–1232. DOI: 10.1097/DCR.0000000000000913</mixed-citation><mixed-citation xml:lang="en">Lightner A. Human Papilloma Virus and Anal Squamous Cell Cancer in IBD: Is It Time to Update Our Practice Parameters. Dis Colon Rectum. 2017;60(12):1231–1232. DOI: 10.1097/DCR.0000000000000913</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Dyson T, Draganov P. Squamous cell cancer of the rectum. World J Gastroenterol. 2009;15(35):4380–4386. DOI: 10.3748/wjg.15.4380</mixed-citation><mixed-citation xml:lang="en">Dyson T, Draganov P. Squamous cell cancer of the rectum. World J Gastroenterol. 2009;15(35):4380–4386. DOI: 10.3748/wjg.15.4380</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Bujanda L, Iriondo C, Munoz C. et al. Squamous metaplasia of the rectum and sigmoid colon. Gastrointest Endosc. 2001;53:255–256. DOI: 10.1067/mge.2001.110916</mixed-citation><mixed-citation xml:lang="en">Bujanda L, Iriondo C, Munoz C. et al. Squamous metaplasia of the rectum and sigmoid colon. Gastrointest Endosc. 2001;53:255–256. DOI: 10.1067/mge.2001.110916</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Morisaki T, Isomoto H, Akazawa Y. et al. Beneficial use of magnifying endoscopy with narrow-band imaging for diagnosing a patient with squamous cell carcinoma of the anal canal. Dig Endosc. 2012;24(1):42–45. DOI: 10.1111/j.1443-1661.2011.01153.x</mixed-citation><mixed-citation xml:lang="en">Morisaki T, Isomoto H, Akazawa Y. et al. Beneficial use of magnifying endoscopy with narrow-band imaging for diagnosing a patient with squamous cell carcinoma of the anal canal. Dig Endosc. 2012;24(1):42–45. DOI: 10.1111/j.1443-1661.2011.01153.x</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Yoshida T, Inoue H, Usui S. et al. Narrow−band imaging system with magnifying endoscopy for superficial esophageal lesions. Gastrointest Endosc. 2004;59:288–295. DOI: 10.1016/s0016-5107(03)02532-x</mixed-citation><mixed-citation xml:lang="en">Yoshida T, Inoue H, Usui S. et al. Narrow−band imaging system with magnifying endoscopy for superficial esophageal lesions. Gastrointest Endosc. 2004;59:288–295. DOI: 10.1016/s0016-5107(03)02532-x</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
