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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">Journal of Modern Oncology</journal-id><journal-title-group><journal-title xml:lang="en">Journal of Modern Oncology</journal-title><trans-title-group xml:lang="ru"><trans-title>Современная онкология</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1815-1434</issn><issn publication-format="electronic">1815-1442</issn><publisher><publisher-name xml:lang="en">LLC Obyedinennaya Redaktsiya</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">52652</article-id><article-id pub-id-type="doi">10.26442/18151434.2020.3.200301</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Clinical Case</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Клинический случай</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">Metastatic renal cell carcinoma of unknown primary site. Clinical follow-up</article-title><trans-title-group xml:lang="ru"><trans-title>Метастатический почечно-клеточный рак без выявленного первичного очага. Клиническое наблюдение</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>N. A.</given-names></name><name xml:lang="ru"><surname>Огнерубов</surname><given-names>Н. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>ognerubov_n.a@mail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></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>T. S.</given-names></name><name xml:lang="ru"><surname>Антипова</surname><given-names>Т. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>doctor, PET-Technology</p></bio><bio xml:lang="ru"><p>врач ООО «ПЭТ-Технолоджи», Центр ядерной медицины</p></bio><email>antipovats@gmail.com</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Gumareva</surname><given-names>G. E.</given-names></name><name xml:lang="ru"><surname>Гумарева</surname><given-names>Г. Е.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>doctor, Pathological Bureau</p></bio><bio xml:lang="ru"><p>врач ТОГБУЗ «Патологоанатомическое бюро»</p></bio><email>ognerubov_n.a@mail.ru</email><xref ref-type="aff" rid="aff4"/></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">Tambov Regional Oncological Clinical Dispensary</institution></aff><aff><institution xml:lang="ru">ГБУЗ «Тамбовский областной онкологический клинический диспансер»</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">PET-Technology</institution></aff><aff><institution xml:lang="ru">ООО «ПЭТ-Технолоджи», Центр ядерной медицины</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">Pathological Bureau</institution></aff><aff><institution xml:lang="ru">ТОГБУЗ «Патологоанатомическое бюро»</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2020-11-30" publication-format="electronic"><day>30</day><month>11</month><year>2020</year></pub-date><volume>22</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>149</fpage><lpage>153</lpage><history><date date-type="received" iso-8601-date="2020-11-29"><day>29</day><month>11</month><year>2020</year></date><date date-type="accepted" iso-8601-date="2020-11-29"><day>29</day><month>11</month><year>2020</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2020, Consilium Medicum</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2020, ООО "Консилиум Медикум"</copyright-statement><copyright-year>2020</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/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://modernonco.orscience.ru/1815-1434/article/view/52652">https://modernonco.orscience.ru/1815-1434/article/view/52652</self-uri><abstract xml:lang="en"><p>Renal cell cancer metastases without evidence of a primary tumor are extremely rare. These variants are usually showed as a spontaneous description of single clinical cases.</p> <p>Aim. This contribution is a clinical follow-up of synchronous renal cell cancer metastases of unknown primary site.</p> <p>Results. A 52-year-old patient U. with a history of increased blood pressure, up to 170/100 mmHg for the last 5 years, who had undergone many instrumental examinations, including ultrasound examination, because of this disease. The computed tomography of the abdomen showed a 49×75 mm heterogeneous tumor in the right adrenal gland in October 2017. The combined positron emission and X-ray computed tomography showed a 79×54×41 mm mass in the right adrenal gland, associated with elevated fluorodeoxyglucose metabolic activity SUVmax 7.25. Focal accumulation of the radiopharmaceutical SUVmax 4.31 in a 17×11×24 mm mass was detected in the space of bifurcation in the mediastinum. The lytic lesion (10×15 mm) was found in right superior L3 articular process. The patient underwent retroperitoneoscopic adrenalectomy and thoracoscopic removal of mediastinal tumor in November 2017 because of the oligometastatic nature of the process. The histological study identified clear-cell carcinoma with areas of papillary structure in the right adrenal gland. The immunohistochemical study showed carcinoma cells intensively expressing CD10, and some other cells – RCC. The immune phenotype of the tumor was identified as clear-cell renal cell carcinoma. The immunohistological and immunohistochemical analysis reviled the metastases of the same variant of renal cell carcinoma in one of 9 lymph nodes. The patient was treated with pazopanib. The primary renal tumor was not detected during the dynamic observation, including the application of annual combined positron emission and X-ray computed tomography. The patient is alive without disease progression with a follow-up of 32 months.</p> <p>Conclusion. Metastases of clear-cell renal cell carcinoma, including adrenal gland, without evidence of a primary site are extremely rare. The main method of treatment is a combination of surgery and targeted therapy, providing long-term local control of the course of the disease.</p></abstract><trans-abstract xml:lang="ru"><p>Метастазы почечно-клеточного рака без выявленной первичной опухоли являются крайне редкими. Они носят характер спонтанного описания отдельных клинических случаев.</p> <p>Цель. Публикация клинического наблюдения синхронных метастазов почечно-клеточного рака без выявленного первичного очага.</p> <p>Результаты. Больной У., 52 года, на протяжении 5 лет стал отмечать повышение артериального давления до 170/100 мм рт. ст., по поводу чего многократно проходил инструментальные обследования, включая ультразвуковое исследование. В октябре 2017 г. при рентгеновской компьютерной томографии органов брюшной полости в правом надпочечнике выявлена опухоль размером 49×75 мм неоднородной структуры и плотности. По данным совмещенной позитронно-эмиссионной и рентгеновской компьютерной томографии в правом надпочечнике определяется объемное образование размером 79×54×41 мм с повышенной метаболической активностью фтордезоксиглюкозы SUVmax 7.25. В средостении, в бифуркационном пространстве, определяется узловое образование 17×11×24 мм с очаговой фиксацией радиофармпрепарата ­SUVmax 4.31. В верхнесуставном отростке L3 справа очаг деструкции 10×15 мм. Учитывая олигометастатический характер процесса, в ноябре 2017 г. пациенту выполнили оперативное вмешательство в объеме ретроперитонеоскопической адреналэктомии и торакоскопического удаления опухоли средостения. При гистологическом исследовании в правом надпочечнике светлоклеточная карцинома с участками папиллярного строения. При иммуногистохимическом исследовании опухолевые клетки интенсивно экспрессируют CD10, а часть клеток – RCC. Иммунный фенотип опухоли соответствует светлоклеточной почечной карциноме. В одном лимфоузле из 9 иммуногистологически и иммуногистохимически метастаз аналогичного варианта рака почки. Пациенту назначен пазопаниб. При динамическом наблюдении, включая ежегодную совмещенную позитронно-эмиссионную и рентгеновскую компьютерную томографию, первичную опухоль почки не выявили. Пациент жив на протяжении 32 мес без прогрессирования заболевания.</p> <p>Заключение. Метастазы светлоклеточного рака почки, включая надпочечник, без выявленного первичного очага встречаются крайне редко. Основным методом лечения является хирургический в комбинации с таргетной терапией, которые обеспечивают длительный локальный контроль течения заболевания.</p></trans-abstract><kwd-group xml:lang="en"><kwd>renal cell carcinoma</kwd><kwd>metastases without evidence of a primary site</kwd><kwd>surgical treatment</kwd><kwd>targeted therapy</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>почечно-клеточный рак</kwd><kwd>метастазы без выявленного первичного очага</kwd><kwd>хирургическое лечение</kwd><kwd>таргетная терапия</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Maldazys JD, deKernion JB. Prognostic factors in metastatic renal carcinoma. J Urol 1986; 136: 376–9. DOI: 10.1016/s0022-5347(17)44873-7</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Bianchi M, Sun M, Jeldres C et al. Distribution of metastatic sites in renal cell carcinoma: a population based analysis. 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