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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">Medical academic journal</journal-id><journal-title-group><journal-title xml:lang="en">Medical academic journal</journal-title><trans-title-group xml:lang="ru"><trans-title>Медицинский академический журнал</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1608-4101</issn><issn publication-format="electronic">2687-1378</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">693675</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Clinical medicine</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Клиническая медицина</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">Hormone therapy of operable breast cancer</article-title><trans-title-group xml:lang="ru"><trans-title>Гормонотерапия операбельного рака молочной железы</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Semiglazov</surname><given-names>V. F.</given-names></name><name xml:lang="ru"><surname>Семиглазов</surname><given-names>В. Ф.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="ru"><p>член-корреспондент РАМН</p></bio><email>shabanov@mail.rcom.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Semiglazov</surname><given-names>V. V.</given-names></name><name xml:lang="ru"><surname>Семиглазов</surname><given-names>В. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>shabanov@mail.rcom.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Ivanov</surname><given-names>V. G.</given-names></name><name xml:lang="ru"><surname>Иванов</surname><given-names>В. Г.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>shabanov@mail.rcom.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Ziltsova</surname><given-names>E. K.</given-names></name><name xml:lang="ru"><surname>Жильцова</surname><given-names>Е. К.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>shabanov@mail.rcom.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Barasch</surname><given-names>N. U.</given-names></name><name xml:lang="ru"><surname>Бараш</surname><given-names>Н. Ю.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>shabanov@mail.rcom.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Tsyrlina</surname><given-names>E. V.</given-names></name><name xml:lang="ru"><surname>Цырлина</surname><given-names>Е. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>shabanov@mail.rcom.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Daschyan</surname><given-names>G. A.</given-names></name><name xml:lang="ru"><surname>Дашян</surname><given-names>Г. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>shabanov@mail.rcom.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Bozok</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Божок</surname><given-names>А. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>shabanov@mail.rcom.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Nurgaziyev</surname><given-names>K. Sh.</given-names></name><name xml:lang="ru"><surname>Нургазиев</surname><given-names>К. Ш.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>shabanov@mail.rcom.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Topuzov</surname><given-names>E. E.</given-names></name><name xml:lang="ru"><surname>Топузов</surname><given-names>Э. Э.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>shabanov@mail.rcom.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">N. N. Petrov Research Institute of Oncology</institution></aff><aff><institution xml:lang="ru">Научно-исследовательский институт онкологии им. проф. Н. Н. Петрова М3 РФ</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2003-08-31" publication-format="electronic"><day>31</day><month>08</month><year>2003</year></pub-date><volume>3</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>79</fpage><lpage>87</lpage><history><date date-type="received" iso-8601-date="2025-10-17"><day>17</day><month>10</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-10-17"><day>17</day><month>10</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2003, Eco-Vector</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2003, Эко-Вектор</copyright-statement><copyright-year>2003</copyright-year><copyright-holder xml:lang="en">Eco-Vector</copyright-holder><copyright-holder xml:lang="ru">Эко-Вектор</copyright-holder></permissions><self-uri xlink:href="https://journals.eco-vector.com/MAJ/article/view/693675">https://journals.eco-vector.com/MAJ/article/view/693675</self-uri><abstract xml:lang="en"><p>The randomized trials have assessed the effects of 1-2 year or 5 years of adjuvant tamoxifen in breast cancer patients. The data for 1433 women with early breast cancer (ER-positive tumours or unknown) were analyzed. For trials of 1-2 years and about 5 years of adjuvant tamoxifen, the proportional recurrence reductions during 5-10 years of follow up were 16,1 and 27 % respectively (p&lt;0,05). The corresponding proportional mortality reductions were 14 and 26,6 % respectively (p&lt;0,05). The proportional mortality reductions were similar for patients with node-positive and node-negative breast cancer, but the absolute mortality reduction were greater in node-positive women. The neoadjuvant treatment of breast cancer patients with letrozole was more effective than treatment with tamoxifen (p&lt;0,05).</p></abstract><trans-abstract xml:lang="ru"><p>В рандомизированных исследованиях оценена эффективность 1-2-летнего и 5-летнего адъювантного лечения тамоксифеном больных раком молочной железы. Анализированы данные 1433 женщин с ранним раком молочной железы (ЭР-положительные опухоли или ЭР-неизвестные). В испытаниях 1-2-летнего и 5-летнего адъювантного лечения тамоксифеном пропорциональное сокращение риска рецидива за 5-10 лет наблюдения оказалось равным 16,1 и 27 % соответственно (р&lt;0,05). Соответствующее пропорциональное сокращение смертности равнялось 14 и 26,6 % (р&lt;0,05). Пропорциональное сокращение смертности оказалось схожим для пациентов с пораженными и непораженными лимфоузлами, но абсолютное сокращение смертности было значительнее у женщин с пораженными лимфоузлами. Неоадъювантное лечение больных раком молочной железы препаратом летрозол оказалось более эффективным, чем лечение тамоксифеном (р&lt;0,05).</p></trans-abstract><kwd-group xml:lang="en"><kwd>breast cancer</kwd><kwd>treatment</kwd><kwd>tamoxifen</kwd><kwd>letrozole</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>рак молочной железы</kwd><kwd>лечение</kwd><kwd>тамоксифен</kwd><kwd>летрозол</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Бассалык Л. С., Пашинцева Л. П. Биохимические методы в диагностике злокачественных онкологов. Л., 1986. С. 147-148.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Бассалык Л. С. (ред.) Рецепторы стероидных гормонов в опухолях человека. М.: Медицина, 1997. 224 с.</mixed-citation></ref><ref id="B3"><label>3.</label><mixed-citation>Берштейн Л. М. Гормональный канцерогенез. 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