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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">Oncohematology</journal-id><journal-title-group><journal-title xml:lang="en">Oncohematology</journal-title><trans-title-group xml:lang="ru"><trans-title>Онкогематология</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1818-8346</issn><issn publication-format="electronic">2413-4023</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">486</article-id><article-id pub-id-type="doi">10.17650/1818-8346-2021-16-3-40-49</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>DIAGNOSIS AND TREATMENT OF MULTIPLE MYELO</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ДИАГНОСТИКА И ЛЕЧЕНИЕ МНОЖЕСТВЕННОЙ МИЕЛОМЫ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Features of 18F-fluorodeoxyglucose uptake in multiple myeloma</article-title><trans-title-group xml:lang="ru"><trans-title>Особенности накопления 18F-фтордезоксиглюкозы в опухолевой ткани при множественной миеломе</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4648-2362</contrib-id><name-alternatives><name xml:lang="en"><surname>Subbotin</surname><given-names>A. S.</given-names></name><name xml:lang="ru"><surname>Субботин</surname><given-names>А. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><bold>Aleksey S. Subbotin </bold></p><p><italic>24 Kashirskoe Shosse, Moscow 115478</italic></p></bio><bio xml:lang="ru"><p><bold>Алексей Сергеевич Субботин </bold></p><p><italic>115478 Москва, Каширское шоссе, 24 </italic></p></bio><email>acsubbotin@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Pronin</surname><given-names>A. I.</given-names></name><name xml:lang="ru"><surname>Пронин</surname><given-names>А. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>24 Kashirskoe Shosse, Moscow 115478</italic></p></bio><bio xml:lang="ru"><p><italic>115478 Москва, Каширское шоссе, 24 </italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Odzharova</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Оджарова</surname><given-names>А. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>24 Kashirskoe Shosse, Moscow 115478</italic></p></bio><bio xml:lang="ru"><p><italic>115478 Москва, Каширское шоссе, 24 </italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Komarova</surname><given-names>M. A.</given-names></name><name xml:lang="ru"><surname>Комарова</surname><given-names>М. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>24 Kashirskoe Shosse, Moscow 115478</italic></p></bio><bio xml:lang="ru"><p><italic>115478 Москва, Каширское шоссе, 24 </italic></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="2021-09-10" publication-format="electronic"><day>10</day><month>09</month><year>2021</year></pub-date><volume>16</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>40</fpage><lpage>49</lpage><history><date date-type="received" iso-8601-date="2021-09-09"><day>09</day><month>09</month><year>2021</year></date><date date-type="accepted" iso-8601-date="2021-09-09"><day>09</day><month>09</month><year>2021</year></date></history><permissions><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/></permissions><self-uri xlink:href="https://oncohematology.abvpress.ru/ongm/article/view/486">https://oncohematology.abvpress.ru/ongm/article/view/486</self-uri><abstract xml:lang="en"><p><bold>Background</bold>. Multiple myeloma (MM) is a kind of malignancy from malignant plasma cells with high intra- and interpatient variability, because of complex clonal evolution of tumor cells. Positron emission tomography combined with computed tomography with 18F-fluorodeoxyglucose (<sup>18</sup>F-FDG-PET/CT) plays a major role in MM visualization, but there are evidences of non-FDG-avid cases of MM. Taking into account the increasing role of <sup>18</sup>F-FDG-PET/CT in MM, special criteria for risk-group stratification was elaborated. These criteria are based on comparison of radiotracer uptake in tumor tissue, mediastinal blood pool and liver.</p><p><bold>Objective</bold>: the study of <sup>18</sup>F-FDG uptake in MM and solitary plasmacytoma before antitumor treatment to assess the applicability of criteria based on the ratio of activity in tumor tissue and liver.</p><p><bold>Materials and methods</bold>. We reviewed 65 <sup>18</sup>F-FDG-PET/CT scans of patients with MM and solitary plasmacytoma before treatment.</p><p><bold>Results</bold>. In our cohort we identified 2 tumor cases of a plasma cell nature, which amounted to 2 % among all B-NHLs. In one case, the process was located in the nasal cavity and clinically manifested itself with nosebleeds. The second case is a lesion of the mouth floor, primarily with the ulcer formation. In the first cases, at diagnosis, the immunohistochemistry (IHC) test was performed after patient’s chemotherapy and radiation treatment, which distorted the tumor immunophenotype. In the second cases with extensive process in maxillary sinuses, a complete and very detailed IHC test was carried out; however the data did not allow for a definitive diagnosis. Difficulties apparently arose in the interpretation of CD38 expression – main marker of plasmacytic line cells, as well as due to the unusual morphology.</p><p><bold>Conclusion</bold>. Therefore, 5-point scale is eligible for MM tumor assessment in 52 % of patients and feasible in 32 % of patients, but in 16 % patients alternative criteria are required.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Введение</bold>. Множественная миелома (ММ) – злокачественное новообразование из малигнизированных плазмоцитов с высокой вариабельностью клинического течения, что обусловлено клональной эволюцией опухолевой ткани. Позитронная эмиссионная томография, совмещенная с компьютерной томографией (ПЭТ/КТ), с <sup>18</sup>F-фтордезоксиглюкозой (<sup>18</sup>F-ФДГ) является информативным методом диагностики ММ, но в ряде случаев опухолевая ткань не накапливает <sup>18</sup>F-ФДГ. С учетом возрастающей роли ПЭТ/КТ в диагностике ММ были предложены критерии, с помощью которых может осуществляться стратификация пациентов по группам риска на основании сопоставления активности опухолевой ткани и референсных областей (аорта и печень).</p><p><bold>Цель исследования</bold> – изучение характеристик накопления <sup>18</sup>F-ФДГ в опухолевой ткани при ММ и солитарной плазмоцитоме до начала противоопухолевого лечения для оценки применимости критериев, в которых используется отношение активности в опухолевой ткани к активности в печени.</p><p><bold>Материалы и методы</bold>. Были ретроспективно изучены данные ПЭТ/КТ с <sup>18</sup>F-ФДГ 65 пациентов с ММ и солитарной плазмоцитомой до лечения.</p><p><bold>Результаты</bold>. Высокая метаболическая активность наблюдалась у 52 % пациентов, умеренная – у 32 %, низкая – у 16 %. Была определена положительная корреляция размеров очагов с уровнем накопления <sup>18</sup>F-ФДГ в них, но в части случаев размеры очагов с уровнями накопления <sup>18</sup>F-ФДГ не коррелировали.</p><p><bold>Заключение</bold>. В 52 % случаев использование критериев Deauville в определении жизнеспособности опухолевой ткани после проведенного лечения ММ целесообразно, в 32 % случаев – возможно, в 16 % случаев требуется применение других подходов.</p></trans-abstract><kwd-group xml:lang="en"><kwd>multiple myeloma</kwd><kwd>solitary plasmacytoma</kwd><kwd>positron emission tomography combined with computed tomography</kwd><kwd>18F-fluorodeoxyglucose</kwd><kwd>standardized uptake value</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>множественная миелома</kwd><kwd>солитарная плазмоцитома</kwd><kwd>позитронная эмиссионная томография</kwd><kwd>совмещенная с компьютерной томографией</kwd><kwd>18F-фтордезоксиглюкоза</kwd><kwd>стандартизованный уровень накопления</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. Palumbo A., Anderson K. Multiple myeloma. N Engl J Med 2011;364(11):1046–60. 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