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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="research-article" 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">899</article-id><article-id pub-id-type="doi">10.17650/2949-5857-2026-16-1-56-62</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>ORIGINAL REPORT</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ОРИГИНАЛЬНОЕ ИССЛЕДОВАНИЕ</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Comparative analysis of short-term and long-term outcomes after surgical treatment of sigmoid colon cancer and rectosigmoid junction cancer: single-center retrospective cohort study</article-title><trans-title-group xml:lang="ru"><trans-title>Сравнительный анализ непосредственных и отдаленных результатов лечения рака сигмовидной кишки и ректосигмоидного отдела толстой кишки: одноцентровое ретроспективное когортное исследование</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8773-7475</contrib-id><name-alternatives><name xml:lang="en"><surname>Sivolob</surname><given-names>Maksim D.</given-names></name><name xml:lang="ru"><surname>Сиволоб</surname><given-names>Максим Дмитриевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>maksim-sivlb@rambler.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7278-8525</contrib-id><name-alternatives><name xml:lang="en"><surname>Erygin</surname><given-names>D. V.</given-names></name><name xml:lang="ru"><surname>Ерыгин</surname><given-names>Д. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>maksim-sivlb@rambler.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3621-7394</contrib-id><name-alternatives><name xml:lang="en"><surname>Polikarpova</surname><given-names>S. B.</given-names></name><name xml:lang="ru"><surname>Поликарпова</surname><given-names>С. Б.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>maksim-sivlb@rambler.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3987-9361</contrib-id><name-alternatives><name xml:lang="en"><surname>Lebed’ko</surname><given-names>M. S.</given-names></name><name xml:lang="ru"><surname>Лебедько</surname><given-names>М. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>maksim-sivlb@rambler.ru</email><xref ref-type="aff" rid="aff4"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0006-6537-1103</contrib-id><name-alternatives><name xml:lang="en"><surname>Sinyutin</surname><given-names>D. A.</given-names></name><name xml:lang="ru"><surname>Синютин</surname><given-names>Д. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>maksim-sivlb@rambler.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">S.S. Yudin Moscow City Clinical Hospital, Moscow Healthcare Department</institution></aff><aff><institution xml:lang="ru">ГБУЗ г. Москвы «Городская клиническая больница им. С. С. Юдина Департамента здравоохранения г. Москвы»</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">2 I.M. Sechenov First Moscow State Medical University, Ministry of Health of Russia (Sechenov University)</institution></aff><aff><institution xml:lang="ru">ФГАОУ ВО Первый Московский государственный медицинский университет им. И. М. Сеченова Минздрава России (Сеченовский Университет)</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">I.M. Sechenov First Moscow State Medical University, Ministry of Health of Russia (Sechenov University)</institution></aff><aff><institution xml:lang="ru">ФГАОУ ВО Первый Московский государственный медицинский университет им. И. М. Сеченова Минздрава России (Сеченовский Университет)</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">S.P. Botkin Moscow Multidisciplinary Scientific and Clinical Center, Moscow Healthcare Department</institution></aff><aff><institution xml:lang="ru">ГБУЗ г. Москвы «Московский многопрофильный научно-клинический центр им. С. П. Боткина Департамента здравоохранения г. Москвы»</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2026-03-15" publication-format="electronic"><day>15</day><month>03</month><year>2026</year></pub-date><volume>16</volume><issue>1</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>56</fpage><lpage>62</lpage><history><date date-type="received" iso-8601-date="2026-01-14"><day>14</day><month>01</month><year>2026</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2026, ABV-press</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2026, АБВ-пресс</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="en">ABV-press</copyright-holder><copyright-holder xml:lang="ru">АБВ-пресс</copyright-holder><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/899">https://onco-surgery.info/jour/article/view/899</self-uri><abstract xml:lang="en"><p><bold>Background.</bold><italic> </italic>Distinguishing rectosigmoid colon cancer as a separate nosological entity does not affect the choice of modern treatment strategy.</p> <p><bold>Aim.</bold> To evaluate differences in short-term and long-term oncological outcomes of surgical treatment for sigmoid colon cancer (SCC) and rectosigmoid colon cancer (RSCC).</p> <p><bold>Materials and methods.</bold> This single-center retrospective cohort study included patients with RSCC and SCC who underwent radical surgical treatment between January 2019 and December 2023. The primary endpoints were the rate of grade IIIB and higher complications per the Clavien–Dindo classification, anastomotic leak rate, recurrence rate, and 3-year overall survival and disease-free survival.</p> <p><bold>Results.</bold> The study included 50 patients with RSCC and 137 patients with SCC. The rates of grade IIIB and higher complications were 2 (4 %) and 9 (6.6 %), <italic>p</italic> = 0.115; the rates of colorectal anastomotic leak were 4 (8 %) and 4 (2.9 %), <italic>p</italic> = 0.213, respectively. Three-year overall survival was 84.6 % and 85.6 % (<italic>p</italic> = 0.856); 3-year disease-free survival was 72.8 % and 81.8 % (<italic>p</italic> = 0.227), respectively.</p> <p><bold>Conclusion.</bold> Within the framework of this retrospective analysis, no clinically significant differences were found in short-term and long-term treatment outcomes for sigmoid colon cancer and rectosigmoid colon cancer.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Введение. </bold>Выделение рака ректосигмоидного отдела толстой кишки (РРСО ТК) как отдельной нозологической единицы не влияет на выбор современной тактики лечения.</p> <p><bold>Цель исследования</bold> – оценка различий в непосредственных и отдаленных онкологических результатах хирургического лечения рака сигмовидной кишки (РСК) и РРСО ТК.</p> <p><bold>Материалы и методы.</bold> В одноцентровое ретроспективное когортное исследование включали больных РРСО ТК и РСК, которым с 2019 по 2023 г. проведено радикальное хирургическое лечение. Основные оцениваемые параметры – частота развития осложнений ≥IIIB степени по Clavien–Dindo, частота развития несостоятельности анастомоза, частота рецидивов, 3-летняя общая и безрецидивная выживаемость.</p> <p><bold>Результаты.</bold> В исследование включены 50 больных РРСО ТК и 137 больных РСК. Частота осложнений ≥IIIB степени составила 2 (4 %) и 9 (6,6 %) случаев соответственно, <italic>р</italic> = 0,115. Частота развития несостоятельности межкишечного анастомоза достигла 4 (8 %) и 4 (2,9 %) случаев соответственно, <italic>р</italic> = 0,213. Трехлетняя общая выживаемость в группе РРСО ТК составила 84,6 %, в группе РСК – 85,6 % (<italic>р</italic> = 0,856), 3-летняя безрецидивная выживаемость – 72,8 и 81,8 % (<italic>р</italic> = 0,227) соответственно.</p> <p><bold>Заключение.</bold> В рамках ретроспективного анализа мы не выявили клинически значимых различий в непосредственных и отдаленных результатах лечения РСК и РРСО ТК.</p></trans-abstract><kwd-group xml:lang="en"><kwd>rectosigmoid colon cancer</kwd><kwd>sigmoid colon cancer</kwd><kwd>anastomotic leakage</kwd><kwd>overall survival</kwd><kwd>disease-free survival</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>рак ректосигмоидного отдела толстой кишки</kwd><kwd>рак сигмовидной кишки</kwd><kwd>несостоятельность анастомоза</kwd><kwd>общая выживаемость</kwd><kwd>безрецидивная выживаемость</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Diaz A., Pawlik T. Association of ICD-10 clinical modification codes for social determinants of health with surgical outcomes and hospital charges among cancer patients. Ann Surg Oncol 2024;31(2):1171–7. DOI: 10.1245/s10434-023-14501-4</mixed-citation></ref><ref id="B2"><label>2.</label><citation-alternatives><mixed-citation xml:lang="en">Gordeev S.S., Fedyanin M.Yu., Chernykh M.V. et al. Changes in clinical guidelines for the treatment of colorectal cancer in 2024. Khirurgiya i onkologiya = Surgery and Oncology 2024;14(1):21–31. (In Russ.). DOI: 10.17650/2949-5857-2024-14-1-21-31</mixed-citation><mixed-citation xml:lang="ru">Гордеев С.C., Федянин М.Ю., Черных М.В. и др. Изменения в клинических рекомендациях по лечению колоректального рака в 2024 году. Хирургия и онкология 2024;14(1):21–31. DOI: 10.17650/2949-5857-2024-14-1-21-31</mixed-citation></citation-alternatives></ref><ref id="B3"><label>3.</label><citation-alternatives><mixed-citation xml:lang="en">Fedyanin M.Yu., Gladkov O.A., Gordeev S.S. et al. Cancer of the colon, rectosigmoid junction and rectum. Zlokachestvennye opukholi = Malignant Tumours 2025;15(3s2-1.1):310–72. (In Russ.). DOI: 10.18027/2224-5057-2025-15-3s2-1.1-14</mixed-citation><mixed-citation xml:lang="ru">Федянин М.Ю., Гладков О.А., Гордеев С.С. и др. Рак ободочной кишки, ректосигмоидного соединения и прямой кишки. Злокачественные опухоли 2025;15(3s2-1.1):310–72. DOI: 10.18027/2224-5057-2025-15-3s2-1.1-14</mixed-citation></citation-alternatives></ref><ref id="B4"><label>4.</label><mixed-citation>Massalou D., Moszkowicz D., Mariage D. et al. Is it possible to give a single definition of the rectosigmoid junction? Surg Radiol Anat 2018;40(4):431–8. DOI: 10.1007/s00276-017-1954-4</mixed-citation></ref><ref id="B5"><label>5.</label><citation-alternatives><mixed-citation xml:lang="en">Olkina A.Yu. Immediate results of rectal resection for cancer using different methods of preoperative bowel preparation. Diss. Cand. of Medicine. St. Petersburg, 2023. 119 p. (In Russ.).</mixed-citation><mixed-citation xml:lang="ru">Олькина А.Ю. Непосредственные результаты выполнения резекции прямой кишки по поводу рака при применении разных способов предоперационной подготовки кишки. Дисс. … канд. мед. наук. Санкт-Петербург, 2023. 119 с.</mixed-citation></citation-alternatives></ref><ref id="B6"><label>6.</label><mixed-citation>Käser S., Froelicher J., Li Q. et al. Adenocarcinomas of the upper third of the rectum and the rectosigmoid junction seem to have similar prognosis as colon cancers even without radiotherapy, SAKK 40/87. Langenbeck’s Arch Surg 2015;400(6):675–82. DOI: 10.1007/s00423-014-1243-1</mixed-citation></ref><ref id="B7"><label>7.</label><mixed-citation>Falch C., Mueller S., Braun M. et al. Oncological outcome of carcinomas in the rectosigmoid junction compared to the upper rectum or sigmoid colon – a retrospective cohort study. Eur J Surg Oncol 2019;45(11):2037–44. DOI: 10.1016/j.ejso.2019.06.024</mixed-citation></ref><ref id="B8"><label>8.</label><mixed-citation>Li F., Wang B., Lu S. et al. Comparison of the sigmoid take-off with other definitions of the rectosigmoid junction: a retrospective comparative cohort analysis. Int J Surg 2020;80:168–74. DOI: 10.1016/j.ijsu.2020.06.039</mixed-citation></ref><ref id="B9"><label>9.</label><mixed-citation>Kutlu B., Benlice C., Seker M.E. et al. The emperor has no clothes – the need for standardized anatomical segment definitions in the management of colon cancer. Int J Colorectal Dis 2025;40(1):1–12. DOI: 10.1007/s00384-025-04972-0</mixed-citation></ref><ref id="B10"><label>10.</label><mixed-citation>Venigalla S., Chowdhry A.K., Wojcieszynski A.P. et al. Comparative effectiveness of neoadjuvant chemoradiation versus upfront surgery in the management of recto-sigmoid junction cancer. Clin Colorectal Cancer 2018;17(3):e557–68. DOI: 10.1016/j.clcc.2018.05.005</mixed-citation></ref><ref id="B11"><label>11.</label><mixed-citation>Hui C., Baclay R., Liu K. et al. Rectosigmoid cancer-rectal cancer or sigmoid cancer? Am J Clin Oncol 2022;45(8):333–7. DOI: 10.1097/COC.0000000000000931</mixed-citation></ref><ref id="B12"><label>12.</label><mixed-citation>Dindo D. The Clavien–Dindo classification of surgical complications. Treatment of postoperative complications after digestive surgery, 2014. Pp. 13–17.</mixed-citation></ref><ref id="B13"><label>13.</label><mixed-citation>Morarasu S., O’Brien L., Clancy C. et al. A systematic review and meta-analysis comparing surgical and oncological outcomes of upper rectal, rectosigmoid and sigmoid tumours. Eur J Surg Oncol 2021;47(9):2421–8. DOI: 10.1016/j.ejso.2021.05.011</mixed-citation></ref><ref id="B14"><label>14.</label><mixed-citation>Benlice C., Elhan A.H., Gorgun E., Kuzu M.A. Long-term outcomes of sigmoid, rectosigmoid, and rectal cancers: a matched analysis. World J Surg 2025;49(4):819–29. DOI: 10.1002/wjs.12509</mixed-citation></ref><ref id="B15"><label>15.</label><mixed-citation>Marinello F.G., Frasson M., Baguena G. et al. Selective approach for upper rectal cancer treatment: total mesorectal excision and preoperative chemoradiation are seldom necessary. Dis Colon Rectum 2015;58(6):556–65. DOI: 10.1097/DCR.0000000000000349</mixed-citation></ref></ref-list></back></article>
