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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="other" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Tumors of female reproductive system</journal-id><journal-title-group><journal-title xml:lang="en">Tumors of female reproductive system</journal-title><trans-title-group xml:lang="ru"><trans-title>Опухоли женской репродуктивной системы</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1994-4098</issn><issn publication-format="electronic">1999-8627</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">1402</article-id><article-id pub-id-type="doi">10.17650/1994-4098-2025-21-3-16-22</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>MAMMOLOGY. ORIGINAL REPORTS</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>МАММОЛОГИЯ. ОРИГИНАЛЬНЫЕ СТАТЬИ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Locoregional radiation therapy as a stage of complex stage for de novo metastatic breast cancer</article-title><trans-title-group xml:lang="ru"><trans-title>Локорегионарная лучевая терапия как этап комплексного лечения больных первично-диссеминированным раком молочной железы</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0504-1488</contrib-id><name-alternatives><name xml:lang="en"><surname>Timoshkina</surname><given-names>E. V.</given-names></name><name xml:lang="ru"><surname>Тимошкина</surname><given-names>Е. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Ekaterina Valeryevna Timoshkina </p><p>24 Kashirskoe Shosse,  Moscow 115522</p></bio><bio xml:lang="ru"><p>Екатерина Валерьевна Тимошкина </p><p>115522 Москва, Каширское шоссе, 24</p></bio><email>doctoretim@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8965-8172</contrib-id><name-alternatives><name xml:lang="en"><surname>Tkachev</surname><given-names>S. I.</given-names></name><name xml:lang="ru"><surname>Ткачев</surname><given-names>С. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>24 Kashirskoe Shosse,  Moscow 115522</p></bio><bio xml:lang="ru"><p>115522 Москва, Каширское шоссе, 24</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7204-370X</contrib-id><name-alternatives><name xml:lang="en"><surname>Trofimova</surname><given-names>O. P.</given-names></name><name xml:lang="ru"><surname>Трофимова</surname><given-names>О. П.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>24 Kashirskoe Shosse,  Moscow 115522</p></bio><bio xml:lang="ru"><p>115522 Москва, Каширское шоссе, 24</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Chernykh</surname><given-names>M. V.</given-names></name><name xml:lang="ru"><surname>Черных</surname><given-names>М. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>24 Kashirskoe Shosse,  Moscow 115522</p></bio><bio xml:lang="ru"><p>115522 Москва, Каширское шоссе, 24</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4944-4035</contrib-id><name-alternatives><name xml:lang="en"><surname>Pryamikova</surname><given-names>Yu. I.</given-names></name><name xml:lang="ru"><surname>Прямикова</surname><given-names>Ю. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>24 Kashirskoe Shosse,  Moscow 115522</p></bio><bio xml:lang="ru"><p>115522 Москва, Каширское шоссе, 24</p></bio><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">N. N. Blokhin National Medical Research Center of Oncology, Ministry of Health of Russia</institution></aff><aff><institution xml:lang="ru">ФГБУ «Национальный медицинский исследовательский центр онкологии им. Н. Н. Блохина» Минздрава России</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-11-21" publication-format="electronic"><day>21</day><month>11</month><year>2025</year></pub-date><volume>21</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>16</fpage><lpage>22</lpage><history><date date-type="received" iso-8601-date="2025-11-21"><day>21</day><month>11</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-11-21"><day>21</day><month>11</month><year>2025</year></date></history><permissions><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/></permissions><self-uri xlink:href="https://ojrs.abvpress.ru/ojrs/article/view/1402">https://ojrs.abvpress.ru/ojrs/article/view/1402</self-uri><abstract xml:lang="en"><p><bold>Background.</bold> At the moment, in order to increase both local control and relapse-free and overall survival in patients with <italic>de novo</italic> metastatic breast cancer, in addition to systemic therapy, local methods of therapy are also used, such as radiation therapy to the primary tumor. Radiation therapy can be performed both in the adjuvant and radical regimen. The data about the comparability of effectiveness of radiation and surgical methods of treatment in terms of overall survival are currently contradictory.</p><p><bold>Aim.</bold> To compare rates of progression-free survival and the frequency of achieving local control of the primary tumor among patients with de novo metastatic breast cancer after a radical course of radiotherapy or surgery followed by adjuvant radiation therapy as part of combined treatment.</p><p><bold>Materials and methods.</bold> The study cohort comprised 89 patients, from which in 50 (56 %) patients radiation therapy was performed as an adjuvant treatment after surgery on the primary site, and in 39 (44 %) patients, it was performed as a radical treatment. The irradiated volume included the ipsilateral half of the anterior chest wall or the breast, depending on the extent of surgery, and the regional lymphatic drainage zones, if it was clinically indicated, in the first group, and the breast and regional lymph nodes in the second group.</p><p><bold>Results.</bold> Two-year progression-free survival was 74 % in the adjuvant radiotherapy group and 67 % in the radical radiotherapy group, two-year local control was 100 % and 82 %, respectively. In both subgroups, progression was most frequently detected in patients with luminal B HER2-negative subtype.</p><p><bold>Conclusion.</bold> Both presented options of radiotherapy showed their effectiveness in terms of achieving local control and progression-free survival. Further research is needed on the role of radiation therapy in the combined treatment of patients with <italic>de novo</italic> metastatic breast cancer, including search of subgroups of patients for whom radiotherapy in one regimen or another will lead to further improvement in both progression-free survival and overall survival.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Введение.</bold> В настоящее время с целью повышения как локального контроля, так и безрецидивной и общей выживаемости больным первично-диссеминированным раком молочной железы, помимо системной терапии, проводятся и локальные методы воздействия, в частности дистанционная лучевая терапия на область первичного опухолевого очага. Лучевая терапия может быть проведена как в адъювантном, так и в радикальном режиме. Данные о сопоставимости эффективности лучевого и хирургического методов лечения с точки зрения общей выживаемости в настоящее время противоречивы.</p><p><bold>Цель исследования</bold> – сравнение выживаемости без прогрессирования и частоты достижения локального контроля со стороны первичной опухоли среди больных первично-диссеминированным раком молочной железы, которым в рамках комплексного лечения был проведен курс дистанционной лучевой терапии по радикальной программе или операция с последующим курсом адъювантной лучевой терапии.</p><p><bold>Материалы и методы.</bold> В исследование было включено 89 пациенток, из которых 50 (56 %) больным лучевая терапия проводилась в адъювантном режиме после выполненной операции на первичном очаге, 39 (44 %) – по радикальной программе. В облучаемый объем была включена ипсилатеральная половина передней грудной стенки или молочная железа, в зависимости от объема операции, а также зоны регионарного лимфооттока, при наличии клинических показаний, в 1-й группе, и молочная железа и зоны регионарного лимфооттока во 2-й группе.</p><p><bold>Результаты.</bold> Двухлетняя выживаемость без прогрессирования составила 74 % в группе адъювантной лучевой терапии и 67 % в группе радикальной лучевой терапии, двухлетний локальный контроль – 100 и 82 % соответственно. В обеих подгруппах прогрессирование наиболее часто выявлялось у пациенток с люминальным B HER2-отрицательным подтипом рака молочной железы.</p><p><bold>Выводы.</bold> Оба представленных варианта проведения лучевой терапии показали свою эффективность с точки зрения достижения локального контроля и выживаемости без прогрессирования. Необходимы дальнейшие исследования роли лучевой терапии в комбинированном лечении больных первично-диссеминированным раком молочной железы, в том числе для поиска подгрупп больных, у которых проведение дистанционной лучевой терапии в том или ином варианте приведет к дальнейшему повышению как выживаемости без прогрессирования, так и общей выживаемости.</p></trans-abstract><kwd-group xml:lang="en"><kwd>de novo primary breast cancer</kwd><kwd>radical course of radiotherapy</kwd><kwd>adjuvant radiotherapy</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>первично-диссеминированный рак молочной железы</kwd><kwd>радикальный курс лучевой терапии</kwd><kwd>адъювантная лучевая терапия</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">1.	Reinhorn D., Mutai R., Yerushalmi R. et al. Locoregional therapy in de novo metastatic breast cancer: Systemic review and metaanalysis. 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