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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">surgonco</journal-id><journal-title-group><journal-title xml:lang="ru">Креативная хирургия и онкология</journal-title><trans-title-group xml:lang="en"><trans-title>Creative surgery and oncology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2076-3093</issn><issn pub-type="epub">2307-0501</issn><publisher><publisher-name>Башкирский государственный медицинский университет</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.24060/2076-3093-2025-15-3-244-250</article-id><article-id custom-type="elpub" pub-id-type="custom">surgonco-1115</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 ИССЛЕДОВАНИЯ</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>Клинические характеристики и особенности неинвазивного рака молочной железы</article-title><trans-title-group xml:lang="en"><trans-title>Clinical Characteristics and Features of Noninvasive Breast Cancer</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0307-8252</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Рассказова</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Rasskazova</surname><given-names>Еlena A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Рассказова Елена Александровна — к.м.н., отделение онкологии и реконструктивно-пластической хирургии молочной железы и кожи</p><p>Москва</p></bio><bio xml:lang="en"><p>Еlena А. Rasskazova — Cand. Sci. (Med.), Unit of Oncology and Reconstructive Surgery of Breast and Skin Tumors</p><p>Moscow</p></bio><email xlink:type="simple">rasskaz2@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/0000-0003-1742-3205</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Онофрийчук</surname><given-names>И. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Onofriychuk</surname><given-names>Irina M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Онофрийчук Ирина Михайловна — к.м.н., 1 онкологическое отделение (кожи, мягких тканей, молочной железы)</p><p>Москва</p></bio><bio xml:lang="en"><p>Irina M. Onofriychuk — Cand. Sci. (Med.), 1st Oncology Unit (skin, soft tissues, breast)</p><p>Moscow</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0008-2646-8409</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гехт</surname><given-names>Г. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Gekht</surname><given-names>Galina A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Гехт Галина Андреевна — отделение онкологии и реконструктивно-пластической хирургии молочной железы и кожи</p><p>Москва</p></bio><bio xml:lang="en"><p>Galina A. Gekht — Unit of Oncology and Reconstructive Surgery of Breast and Skin Tumors</p><p>Moscow</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Московский научно-исследовательский онкологический институт им. П.А. Герцена — филиал Национального медицинского исследовательского центра радиологии</institution><country>Россия</country></aff><aff xml:lang="en"><institution>P.A. Hertsen Moscow Research Oncology Institute — branch of the National Medical Research Center for Radiology</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Московский многопрофильный клинический центр «Коммунарка»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Moscow Multidisciplinary Clinical Center “Kommunarka”</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>17</day><month>09</month><year>2025</year></pub-date><volume>15</volume><issue>3</issue><fpage>244</fpage><lpage>250</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Рассказова Е.А., Онофрийчук И.М., Гехт Г.А., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Рассказова Е.А., Онофрийчук И.М., Гехт Г.А.</copyright-holder><copyright-holder xml:lang="en">Rasskazova Е.A., Onofriychuk I.M., Gekht G.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.surgonco.ru/jour/article/view/1115">https://www.surgonco.ru/jour/article/view/1115</self-uri><abstract><p>Введение. В статье представлен опыт МНИОИ им. П.А. Герцена, проанализированы 110 пациенток с диагнозом РМЖ 0 стадии за период с 2023 по 2024 г. Материалы и методы. По гистологической структуре преобладал внутрипротоковый рак — Тis (DCIS) 100/110 (90,9%), на втором месте рак Педжета — Тis (Paget) 7/110 (6,4%), на третьем месте внутридольковый рак — Тis (LCIS) 3/110 (2,7%). Мастэктомия выполнена у 17 (15,5%) больных, подкожная/кожесохранная мастэктомия с реконструкцией — у 44 (40%) пациенток и резекция молочной железы  — в  49 (44,5%) случаях. Результаты. По  данным планового гистологического исследования конверсия 0 стадии выявлена в 42/110 (38,2%) случаях. При этом I стадии РМЖ диагностирована в 33,6%, II стадия РМЖ — в 4,5%. Положительные края резекции (R1) при плановом морфологическом исследовании диагностированы у 15 (13,6%) пациенток. Обсуждение. МРТ молочных желез при неинвазивном РМЖ — необходимый компонент для определения распространенности процесса, определения мультифокальности или мультицентричности поражения, и, как следствие, решения о возможности сохранения молочной железы или ее удаления. Важным также является вопрос о необходимости исследования сторожевого лимфатического узла при неинвазивном раке молочной железы. Заключение. Локальные рецидивы РМЖ среди анализируемой группы диагностированы у 2 (1,8 ± 1,6%) пациенток. Конверсия 0 стадии РМЖ в другие стадии, т. е. cTis→pT+, диагностирована у 42/110 (38,2%) пациенток. Несмотря на распространенность процесса (средний размер сancer in situ 42 мм), в 93% выполнены органосохранные операции или подкожные мастэктомии с реконструкцией. Таким образом, сancer  in situ может в  40% трансформироваться в  другие стадии. Безусловно, роль диагностических методов для оценки распространенности стадии РМЖ крайне важна для выбора оптимального объема хирургического лечения.</p></abstract><trans-abstract xml:lang="en"><p>Introduction. This article presents the study of 110 female patients diagnosed with stage 0 breast cancer conducted at the P. Hertsen Moscow Oncology Research Institute between 2023 and 2024. Materials and methods. By histological type, ductal carcinoma in situ (Tis, DCIS) predominated in 100/110 cases (90.9%), followed by Paget’s disease (Tis, Paget) in 7/110 (6.4%), and lobular carcinoma in situ (Tis, LCIS) in 3/110 (2.7%). Mastectomy was performed in 17 patients (15.5%), skin-sparing mastectomy with reconstruction in 44 (40%), and breast-conserving surgery in 49 (44.5%). Results. According to routine histological examination, progression of DCIS was identified in 42/110 patients (38.2%). Among them, stage I breast cancer was diagnosed in 33.6% and stage II in 4.5%. In routine morphological examination, positive resection margins (R1) were detected in 15 patients (13.6%). Discussion. Breast MRI in non-invasive breast cancer is an essential procedure for determining disease extent, assessing multifocality or multicentricity, and thus guiding the decision on breast-conserving surgery versus mastectomy. Another important issue is the need to evaluate sentinel lymph nodes in cases of non-invasive breast cancer. Conclusion. Local recurrences of breast cancer in the analyzed group were diagnosed in 2 patients (1.8 ± 1.6%). Progression of stage 0 breast cancer to higher stages, i.e., cTis → pT+, was observed in 42/110 patients (38.2%). Despite the extent of disease (mean size of carcinoma in situ was 42 mm), breastconserving surgery or nipple-/skin-sparing mastectomy with reconstruction were performed in 93% of cases. Thus, carcinoma in situ may progress to higher stages in about 40% of patients. The role of diagnostic methods in assessing breast cancer stage is therefore crucial for selecting an optimal surgical management.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>рак молочной железы</kwd><kwd>карцинома молочной железы in situ</kwd><kwd>конверсия стадии</kwd><kwd>маммография</kwd><kwd>томосинтез</kwd><kwd>магнитно-резонансная томография</kwd><kwd>биопсия</kwd><kwd>мастэктомия</kwd><kwd>рецидив</kwd><kwd>органосохраняющая хирургия</kwd></kwd-group><kwd-group xml:lang="en"><kwd>breast cancer</kwd><kwd>carcinoma in situ</kwd><kwd>stage progression</kwd><kwd>mammography</kwd><kwd>tomosynthesis</kwd><kwd>magnetic resonance imaging</kwd><kwd>biopsy</kwd><kwd>mastectomy</kwd><kwd>recurrence</kwd><kwd>breast-conserving surgery</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Данная работа не финансировалась.</funding-statement><funding-statement xml:lang="en">This work is not funded.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Davey M.G., O’Flaherty C., Cleere E.F., Nohilly A., Phelan J., Ronane E., et al. 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