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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">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">10.33878/2073-7556-2023-22-3-62-69</article-id><article-id custom-type="elpub" pub-id-type="custom">gnck-1804</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>Эффективность неоадъювантной химиолучевой терапии при перстневидноклеточном раке прямой кишки: ретроспективное исследование с псевдорандомизацией</article-title><trans-title-group xml:lang="en"><trans-title>The efficacy of neoadjuvant chemoradiotherapy in signet ring cell carcinoma of the rectum: a  retrospective propensity-score matched study</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9303-8379</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гордеев</surname><given-names>С. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Gordeev</surname><given-names>S. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Гордеев Сергей Сергеевич — к.м.н., ведущий научный сотрудник онкологического отделения хирургических методов лечения №3 (колопроктологии); доцент кафедры онкологии</p><p>Каширское ш., д. 23, г. Москва, 115478</p><p>ул. Одесская, д. 54, г. Тюмень, 625023</p></bio><bio xml:lang="en"><p>Sergey S. Gordeev — MD, PhD, Leading Researcher, Department of Oncology of Surgical Methods of Treatment № 3 (Coloproctology); Docent of Department of Oncology</p><p>Kashirskoje Shosse, 23, Moscow, 115478</p><p>Odesskaya st., 54, Tyumen, 625023</p></bio><email xlink:type="simple">s.gordeev@ronc.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/0000-0003-2163-1752</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Беленькая</surname><given-names>Я. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Belenkaya</surname><given-names>Ya. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Беленькая Яна Владимировна — студентка, педиатрический факультет</p><p>ул. Трубецкая, д. 8, стр. 2, г. Москва, 119992</p></bio><bio xml:lang="en"><p>Yana V. Belenkaya — a student, Pediatric Faculty</p><p>Trubetskaya st., 8-2, Moscow, 119992</p></bio><email xlink:type="simple">yana-belenkaya@bk.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>Магаррамова</surname><given-names>З. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Magarramova</surname><given-names>Z. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Магаррамова Зара Назимовна — ординатор</p><p>Каширское ш., д. 23, г. Москва, 115478</p></bio><bio xml:lang="en"><p>Zara N. Magarramova — Resident</p><p>Kashirskoje Shosse, 23, Moscow, 115478</p></bio><email xlink:type="simple">zara.magarramova@bk.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>Комаров</surname><given-names>И. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Komarov</surname><given-names>I. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Комаров Игорь Геннадьевич — профессор, д.м.н., ведущий научный сотрудник хирургического отделения №2 диагностики опухолей НИИ клинической онкологии им. Н.Н. Трапезникова</p><p>Каширское ш., д. 23, г. Москва, 115478</p></bio><bio xml:lang="en"><p>Igor G. Komarov, MD, PhD, DSc, Professor, Leading Researcher, Surgery Department of Tumor Diagnostics № 2, N.N. Trapeznikov Scientific Research Institute of Clinical Oncology</p><p>Kashirskoje Shosse, 23, Moscow, 115478</p></bio><email xlink:type="simple">komarovig@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>Малихов</surname><given-names>А. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Malikhov</surname><given-names>A. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Малихов Аркадий Геннадьевич — д.м.н., ведущий научный сотрудник онкологического отделения хирургических методов лечения №3 (колопроктологии)</p><p>Каширское ш., д. 23, г. Москва, 115478</p></bio><bio xml:lang="en"><p>Arkadiy G. Malikhov — PhD, DSc, Leading Researcher, Department of Oncology of Surgical Methods of Treatment № 3 (Coloproctology)</p><p>Kashirskoje Shosse, 23, Moscow, 115478</p></bio><email xlink:type="simple">malikhoff@mail.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9289-1247</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мамедли</surname><given-names>З. З.</given-names></name><name name-style="western" xml:lang="en"><surname>Mamedli</surname><given-names>Z. Z.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мамедли Заман Заурович — д.м.н., заведующий онкологическим отделением хирургических методов лечения №3 (колопроктологии)</p><p>Каширское ш., д. 23, г. Москва, 115478</p></bio><bio xml:lang="en"><p>Zaman Z. Mamedli — MD, PhD, DSc, Head of the Oncology Department of Surgical Methods of Treatment № 3 (Coloproctology)</p><p>Kashirskoje Shosse, 23, Moscow, 115478</p></bio><email xlink:type="simple">z.z.mamedli@gmail.com</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>Стилиди</surname><given-names>И. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Stilidi</surname><given-names>I. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Стилиди Иван Сократович — академик РАН, профессор, д.м.н., директор</p><p>Каширское ш., д. 23, г. Москва, 115478</p></bio><bio xml:lang="en"><p>Ivan S. Stilidi — Academician of the Russian Academy of Sciences, Professor, MD, PhD, DSc, Director </p><p>Kashirskoje Shosse, 23, Moscow, 115478</p></bio><email xlink:type="simple">director@ronc.ru</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБУ «НМИЦ онкологии им. Н. Н. Блохина» Минздрава России; ФГБОУ ВПО «Тюменский государственный медицинский университет» Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>N.N. Blokhin National Medical Research Center of Oncology; Tyumen State Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ФГАОУ «ПМГМУ им. И.М. Сеченова» Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>I.M. Sechenov First Moscow State Medical University (Sechenov University)</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>ФГБУ «НМИЦ онкологии им. Н. Н. Блохина» Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>N.N. Blokhin National Medical Research Center of Oncology</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>21</day><month>09</month><year>2023</year></pub-date><volume>22</volume><issue>3</issue><fpage>62</fpage><lpage>69</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Гордеев С.С., Беленькая Я.В., Магаррамова З.Н., Комаров И.Г., Малихов А.Г., Мамедли З.З., Стилиди И.С., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Гордеев С.С., Беленькая Я.В., Магаррамова З.Н., Комаров И.Г., Малихов А.Г., Мамедли З.З., Стилиди И.С.</copyright-holder><copyright-holder xml:lang="en">Gordeev S.S., Belenkaya Y.V., Magarramova Z.N., Komarov I.G., Malikhov A.G., Mamedli Z.Z., Stilidi I.S.</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/1804">https://www.ruproctology.com/jour/article/view/1804</self-uri><abstract><sec><title>ВСТУПЛЕНИЕ</title><p>ВСТУПЛЕНИЕ: в научной литературе имеется мало информации о чувствительности перстневидноклеточного рака прямой кишки (ПРПК) к лучевой терапии (ЛТ).</p><p>ЦЕЛЬЮ исследования было изучение эффективности проведения предоперационной химиолучевой терапии (ХЛТ) у пациентов с ПРПК.</p></sec><sec><title>ПАЦИЕНТЫ И МЕТОДЫ</title><p>ПАЦИЕНТЫ И МЕТОДЫ: проведен ретроспективный анализ историй болезней из архива НМИЦ онкологии им. Н.Н. Блохина и многоцентрового реестра Российского общества специалистов по колоректальному раку (РОСКР) за период с 2000 по 2020 гг. Отобраны пациенты с гистологически подтвержденным ПРПК, которым проводили предоперационную ХЛТ. Методом псевдорандомизации 1:1 с учетом пола, возраста, размеров опухоли, сТ, сN была подобрана контрольная группа пациентов с аденокарциномой прямой кишки. Оценена частота достижения лечебного патоморфоза 3–4 степени по шкале Dworak, RECIST, пятилетняя общая (ОВ) и безрецидивная выживаемость (БРВ).</p></sec><sec><title>РЕЗУЛЬТАТЫ</title><p>РЕЗУЛЬТАТЫ: в исследуемую и контрольную группу включено по 22 пациента. В исследуемой группе было по 11 (50%) пациентов с клинической стадией сТ3 и сТ4. В контрольной группе у 10 (45,5%) пациентов была клиническая стадия сТ3, у 12 (54,5%) — сТ4 (р = 0,763). Количество пациентов с клиническими стадиями сN1-2 было 17 (77,3%) и 16 (72,7%) в исследуемой и контрольной группе, соответственно (р = 0,728). Частота достижения патоморфоза 3–4 степени (Dworak) составила 40,9% в группе пациентов с ПРПК, 45,5% — в группе пациентов с аденокарциномой прямой кишки (p = 0,761). При оценке по шкале RECIST у 9 (40,9%), 12 (54,5%) и 1 (4,5%) пациентов с ПРПК наблюдалась частичная регрессия опухоли, стабилизация и прогрессирование, соответственно. При аденокарциноме прямой кишки частичная регрессия наблюдалась у 18 (81,8%) пациентов, а стабилизация — у 4 (18,2%) (p = 0,018). Медиана наблюдения составила 58,8 месяцев. Пятилетняя ОВ составила 34% в группе ПРПК и 71,3% в группе аденокарциномы прямой кишки (р = 0,024), а пятилетняя БРВ — 30,2% при ПРПК и 52,2% — при аденокарциноме (p = 0,115).</p></sec><sec><title>ЗАКЛЮЧЕНИЕ</title><p>ЗАКЛЮЧЕНИЕ: проведение ХЛТ у пациентов с ПРПК приводит к достижению лечебного патоморфоза 3–4 степени столь же часто, как и при аденокарциноме, однако реже обеспечивает регрессию опухоли. При данном гистологическом подтипе отмечаются достоверно более низкие показатели ОВ.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>INTRODUCTION</title><p>INTRODUCTION: there is a lack of information chemoradiotherapy (CRT) efficacy in signet ring cell carcinoma of the rectum (SRCCR). The aim of our research was to investigate the efficacy of preoperative CRT in patients with SRCCR.</p></sec><sec><title>PATIENTS AND METHODS</title><p>PATIENTS AND METHODS: we conducted a retrospective analysis of medical records from the archive of Research Institute FSBI “N.N. Blokhin Cancer Research Center” of the Ministry of Health of Russia and multicenter registry of the Russian Society of Specialists in Colorectal Cancer (RSSCC) from 2000 to 2020 and included in the study group patients with histologically confirmed primary SRCCR who received preoperative CRT. A control group with rectal adenocarcinoma was created using propensity-score matching from the institutional database 1:1 taking into account sex, age, tumor size, the cT and cN clinical stage. We estimated the rate of Dworak tumor regression grade 3-4, RECIST, 5-year overall survival (OS) and disease-free survival (DFS) rates.</p></sec><sec><title>RESULTS</title><p>RESULTS: the study and control group included 22 patients each. The study group included 11 patients (50%) with cT3 and cT4 clinical stage. 10 (45,5%) patients had cT3 clinical stage and 12 (54,5%) patients had cT4 clinical stage in the control group (p = 0,763). The number of patients with cN1-2 clinical stage was 17 (77,3%) and 16 (72,7%) in the study and control group, respectively (p = 0,728). The rate of Dworak tumor regression grade 3–4 was 40,9% in the group of patients with SRCCR and 45,5% in the group of patients with rectal adenocarcinoma (p = 0,761).When assessed by RECIST scale, 9 (40,9%), 12 (54,5%) and 1 (4,5%) patients with SRCCR had partial tumor response, stabilization and progression, respectively. Partial response was observed in 18 (81,8%) patients and stabilization — in 4 (18,2%) patients with rectal adenocarcinoma (p = 0,018). Median followup was 58,8 months. The 5-year OS was 34% in the SRCCR group and 71,3% in the group with rectal adenocarcinoma (p = 0,024), and the 5-year PFS was 30,2% with SRCCR and 52,2% with adenocarcinoma (p = 0,115).</p></sec><sec><title>CONCLUSIONS</title><p>CONCLUSIONS: CRT leads to comparable grade 3–4 tumor regression in SRCCR and rectal adenocarcinoma, but the objective response rate is lower. This histological subtype has significantly lower OS values.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>колоректальный рак</kwd><kwd>перстневидноклеточный рак</kwd><kwd>химиолучевая терапия</kwd><kwd>аденокарцинома</kwd><kwd>неоадъювантная терапия</kwd></kwd-group><kwd-group xml:lang="en"><kwd>colorectal cancer</kwd><kwd>signet ring cell carcinoma</kwd><kwd>chemoradiotherapy</kwd><kwd>adenocarcinoma</kwd><kwd>neoadjuvant therapy</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">Fadel M. G., Malietzis G., Constantinides V., Pellino G., Tekkis P., Kontovounisios C. 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