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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">Consilium Medicum</journal-id><journal-title-group><journal-title xml:lang="en">Consilium Medicum</journal-title><trans-title-group xml:lang="ru"><trans-title>Consilium Medicum</trans-title></trans-title-group><trans-title-group xml:lang="zh"><trans-title>Consilium Medicum</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2075-1753</issn><issn publication-format="electronic">2542-2170</issn><publisher><publisher-name xml:lang="en">Consilium Medicum</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">109882</article-id><article-id pub-id-type="doi">10.26442/20751753.2022.6.201279</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</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">Rituximab-induced interstitial pneumonitis in patient with non-Hodgkin lymphoma: a clinical case</article-title><trans-title-group xml:lang="ru"><trans-title>Ритуксимаб-индуцированный интерстициальный пневмонит при неходжкинской лимфоме. Клинический случай</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4045-1247</contrib-id><name-alternatives><name xml:lang="en"><surname>Ognerubov</surname><given-names>Nikolai A.</given-names></name><name xml:lang="ru"><surname>Огнерубов</surname><given-names>Николай Алексеевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>D. Sci. (Med.), Cand. Sci. (Law), Prof.</p></bio><bio xml:lang="ru"><p>д-р мед. наук, канд. юрид. наук, проф., зав. каф. онкологии Медицинского института; засл. работник высшей школы РФ, засл. врач РФ</p></bio><email>ognerubov_n.a@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4165-8397</contrib-id><name-alternatives><name xml:lang="en"><surname>Antipova</surname><given-names>Tatiana S.</given-names></name><name xml:lang="ru"><surname>Антипова</surname><given-names>Татьяна Сергеевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>doctor</p></bio><bio xml:lang="ru"><p>врач Центра ядерной медицины</p></bio><email>ognerubov_n.a@mail.ru</email><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Derzhavin Tambov State University</institution></aff><aff><institution xml:lang="ru">ФГБОУ ВО «Тамбовский государственный университет им. Г.Р. Державина»</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">PET-Technology</institution></aff><aff><institution xml:lang="ru">ООО «ПЭТ-Технолоджи»</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2022-06-15" publication-format="electronic"><day>15</day><month>06</month><year>2022</year></pub-date><volume>24</volume><issue>6</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>408</fpage><lpage>411</lpage><history><date date-type="received" iso-8601-date="2022-08-15"><day>15</day><month>08</month><year>2022</year></date><date date-type="accepted" iso-8601-date="2022-08-15"><day>15</day><month>08</month><year>2022</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2022, Consilium Medicum</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2022, ООО "Консилиум Медикум"</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="en">Consilium Medicum</copyright-holder><copyright-holder xml:lang="ru">ООО "Консилиум Медикум"</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by-nc-sa/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://consilium.orscience.ru/2075-1753/article/view/109882">https://consilium.orscience.ru/2075-1753/article/view/109882</self-uri><abstract xml:lang="en"><p>Rituximab is a chimeric monoclonal antibody against CD20+ lymphocytes used to treat non-Hodgkin lymphoma, hematological and autoimmune diseases – rheumatoid arthritis, systemic lupus erythematosus, thrombocytopenic purpura, hemolytic anemia, multiple sclerosis. The safety of the drug is critical to the choice of treatment. Rituximab-associated interstitial lung disease is rare.</p> <p><bold>Objective. </bold>To describe a case of interstitial pneumonitis induced by rituximab in monotherapy at the end of maintenance therapy.</p> <p><bold>Materials and methods.</bold> We describe a case of a 37-year-old patient with stage IIB non-Hodgkin lymphoma involving palatine tonsils and cervical and submandibular lymph nodes on both sides. Histologically, this tumor was a diffuse large B-cell lymphoma.</p> <p><bold>Results. </bold>A patient received six R-CHOP courses of chemotherapy and immunotherapy for stage IIB diffuse large B-cell lymphoma. After the therapy, a complete clinical and metabolic response was achieved. Rituximab maintenance therapy was administered at a dose of 375 mg/m<sup>2</sup> every 2 months for 2 years. At this treatment stage, combined positron emission tomography and 18F-fluorodeoxyglucose computed tomography (PET/CT with 18F-FDG) was performed at 4–5 months intervals. No radiological signs of pulmonary diseases were detected. Seven weeks after the last dose of rituximab (24 months), another PET/CT with 18F-FDG showed radiological changes that were considered to be interstitial pneumonitis, with no respiratory signs of the disease. No signs of tumor progression were found.</p> <p><bold>Conclusion. </bold>Rituximab may contribute to late pulmonary toxicity presented as interstitial pneumonitis in non-Hodgkin lymphoma patients at a young age after maintenance therapy for 24 months. PET/CT with 18F-FDG is the primary method of diagnosing pulmonary toxicity.</p></abstract><trans-abstract xml:lang="ru"><p>Ритуксимаб представляет собой химерное моноклональное антитело против CD20+ лимфоцитов, применяемое для лечения неходжкинских лимфом, гематологических и аутоиммунных заболеваний – ревматоидного артрита, системной красной волчанки, тромбоцитопенической пурпуры, гемолитической анемии, рассеянного склероза. Безопасность препарата имеет важное значение для принятия решения о лечении. Интерстициальные заболевания легких, ассоциированные с ритуксимабом, встречаются редко.</p> <p><bold>Цель. </bold>Описать случай интерстициального пневмонита, индуцированного ритуксимабом в монорежиме по окончании поддерживающей терапии.</p> <p><bold>Материалы и методы. </bold>Под наблюдением находился пациент 37 лет с неходжкинской лимфомой стадии IIB, с поражением небных миндалин, шейных и подчелюстных лимфатических узлов с обеих сторон. Гистологически – диффузная В-клеточная крупноклеточная лимфома.</p> <p><bold>Результаты. </bold>Больному по поводу диффузной В-клеточной крупноклеточной лимфомы IIB стадии проведено 6 курсов химиоиммунотерапии по схеме R-CHOP, по окончании которых получен полный клинико-метаболический ответ. Назначена поддерживающая терапия ритуксимабом в дозе 375 мг/м<sup>2</sup> каждые 2 мес на протяжении 2 лет. На этом этапе лечения проводилась совмещенная позитронно-эмиссионная томография c компьютерной томографией с 18F-фтордезоксиглюкозой (ПЭТ/КТ с 18F-ФДГ) с интервалом 4–5 мес. При этом каких-либо рентгенологических проявлений легочной патологии не выявлено. Через 7 нед после последнего введения ритуксимаба (24 мес) по результатам очередной ПЭТ/КТ с 18F-ФДГ выявлены рентгенологические изменения, которые расценены как интерстициальный пневмонит, какие-либо респираторные проявления заболевания отсутствовали. Признаков прогрессирования опухолевого процесса не обнаружено.</p> <p><bold>Заключение. </bold>Ритуксимаб может способствовать развитию поздней легочной токсичности в виде интерстициального пневмонита у больных неходжкинской лимфомой в молодом возрасте после завершения поддерживающей терапии в течение 24 мес. ПЭТ/КТ с 18F-ФДГ является основным методом диагностики легочной токсичности.</p></trans-abstract><kwd-group xml:lang="en"><kwd>non-Hodgkin lymphoma</kwd><kwd>rituximab</kwd><kwd>interstitial pneumonitis</kwd><kwd>PET/CT</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>неходжкинская лимфома</kwd><kwd>ритуксимаб</kwd><kwd>интерстициальный пневмонит</kwd><kwd>ПЭТ/КТ</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Rastetter W, Molina A, White CA. Rituximab: expanding role in therapy for lymphomas and autoimmune diseases. Annu Rev Med. 2004;55(1):477-503. 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