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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">Russian Journal of Skin and Venereal Diseases</journal-id><journal-title-group><journal-title xml:lang="en">Russian Journal of Skin and Venereal Diseases</journal-title><trans-title-group xml:lang="ru"><trans-title>Российский журнал кожных и венерических болезней</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1560-9588</issn><issn publication-format="electronic">2412-9097</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">105705</article-id><article-id pub-id-type="doi">10.17816/dv105705</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>DERMATO-ONCOLOGY</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ДЕРМАТООНКОЛОГИЯ</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">Merkel cell carcinoma: a case report</article-title><trans-title-group xml:lang="ru"><trans-title>Клинический случай карциномы Меркеля</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1088-2911</contrib-id><contrib-id contrib-id-type="spin">3712-8453</contrib-id><name-alternatives><name xml:lang="en"><surname>Vertieva</surname><given-names>Ekaterina Yu.</given-names></name><name xml:lang="ru"><surname>Вертиева</surname><given-names>Екатерина Юрьевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Cand. Sci. (Med.)</p></bio><bio xml:lang="ru"><p>к.м.н.</p></bio><email>ivertieva@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5635-6100</contrib-id><contrib-id contrib-id-type="spin">5150-0535</contrib-id><name-alternatives><name xml:lang="en"><surname>Tertychnyy</surname><given-names>Alexander S.</given-names></name><name xml:lang="ru"><surname>Тертычный</surname><given-names>Александр Семенович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Cand. Sci. (Med.)</p></bio><bio xml:lang="ru"><p>к.м.н.</p></bio><email>atertychyy@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Dubinich</surname><given-names>Anna D.</given-names></name><name xml:lang="ru"><surname>Дубинич</surname><given-names>Анна Дмитриевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD</p></bio><email>aniu.dubini4@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Konstantinova</surname><given-names>Zoya E.</given-names></name><name xml:lang="ru"><surname>Константинова</surname><given-names>Зоя Евгеньевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Cand. Sci. (Med.)</p></bio><bio xml:lang="ru"><p>к.м.н.</p></bio><email>zoe4ka@bk.ru</email><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">I.M. Sechenov First Moscow State Medical University (Sechenov University)</institution></aff><aff><institution xml:lang="ru">Первый Московский государственный медицинский университет имени И.М. Сеченова (Сеченовский Университет)</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Chaika Health</institution></aff><aff><institution xml:lang="ru">Клиники Чайка</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2021-11-28" publication-format="electronic"><day>28</day><month>11</month><year>2021</year></pub-date><volume>24</volume><issue>6</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>529</fpage><lpage>535</lpage><history><date date-type="received" iso-8601-date="2022-03-31"><day>31</day><month>03</month><year>2022</year></date><date date-type="accepted" iso-8601-date="2022-04-04"><day>04</day><month>04</month><year>2022</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2021, Eco-Vector</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2021, ООО "Эко-Вектор"</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="en">Eco-Vector</copyright-holder><copyright-holder xml:lang="ru">ООО "Эко-Вектор"</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/" start_date="2025-08-01"/></permissions><self-uri xlink:href="https://rjsvd.com/1560-9588/article/view/105705">https://rjsvd.com/1560-9588/article/view/105705</self-uri><abstract xml:lang="en"><p>Merkel cell carcinoma is a rare and aggressive cutaneous neuroendocrine malignancy that presents as a persistent red-purplish, asymptomatic and rapidly growing nodule. It typically affects sun-exposed skin of white elderly individuals. In addition, risk factors for Merkel cell carcinoma include immunosuppression, as well as the presence of multiple myeloma or a history of chronic lymphocytic leukemia.</p> <p>To diagnose Merkel cell carcinoma, five criteria of the AEIOU algorithm proposed in 2008 by a group of scientists at the University of Washington are used.</p> <p>From the methods of laboratory diagnostics a detailed analysis of blood is used, also a histological and immunohistochemical study is carried out . Among the methods of instrumental diagnostics, ultrasound examination of the primary tumor and groups of lymph nodes of the appropriate localization, abdominal and pelvic organs; chest X-ray and skeletal bone scintigraphy; positron emission tomography combined with X-ray computed tomography are mandatory. A sentinel node biopsy followed by histological and immunohistochemical examination is recommended in the absence of metastatic lymph node lesions.</p> <p>We herein contribute by reporting a case of Merkel cell carcinoma affecting the forearm of a 51-year-old female. This clinical case confirms the aggressiveness of this type of the skin cancer as well as high possibility of misdiagnosis due to the scarce occurrence of Merkel cell carcinoma and lack of professional knowledge.</p> <p>Therefore, it is important for the practitioners involved in the care of skin lesions to be aware of this condition and the need for a multidisciplinary treatment approach.</p></abstract><trans-abstract xml:lang="ru"><p>Карцинома Меркеля ― редкая агрессивная опухоль кожи нейроэндокринной природы, представляющая собой безболезненный быстрорастущий узел округлой формы красного, розового или фиолетового цвета. Карцинома Меркеля чаще диагностируется у пожилых людей со светлой кожей на участках, наиболее подверженных ультрафиолетовому излучению. Кроме этого, факторы риска карциномы Меркеля включают в себя иммуносупрессию, а также наличие множественной миеломы или хронической лимфоцитарной лейкемии в анамнезе.</p> <p>Для постановки диагноза карциномы Меркеля используют пять критериев алгоритма AEIOU, предложенного в 2008 г. группой учёных Вашингтонского университета.</p> <p>Из методов лабораторной диагностики применяют развёрнутый анализ крови, также проводят гистологическое и иммуногистохимическое исследование биоптата. Среди методов инструментальной диагностики обязательными являются ультразвуковое исследование первичной опухоли и групп лимфатических узлов соответствующей локализации, органов брюшной полости и малого таза; рентгенография органов грудной клетки и сцинтиграфия костей скелета; метод позитронно-эмиссионной томографии, совмещённой с рентгеновской компьютерной томографией. Проведение биопсии сторожевого узла с последующим гистологическим и иммуногистохимическим исследованием рекомендуют при отсутствии метастатического поражения лимфатических узлов.</p> <p>В статье представлен случай карциномы Меркеля в области предплечья. Данный клинический случай подтверждает крайне агрессивный характер опухоли, а также высокую вероятность постановки неправильного диагноза вследствие редкой встречаемости карциномы Меркеля и недостаточной информированности врачей первичного звена и других специальностей о данном заболевании.</p> <p>Специалисту важно своевременно заподозрить карциному Меркеля и направить пациента к онкологу с целью проведения биопсии с последующим выполнением гистологического и иммуногистохимического исследования.</p></trans-abstract><kwd-group xml:lang="en"><kwd>Merkel cell carcinoma</kwd><kwd>neuroendocrine cancer of the skin</kwd><kwd>dermatology</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>карцинома Меркеля</kwd><kwd>нейроэндокринная опухоль кожи</kwd><kwd>дерматология</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">Toker C. Trabecular carcinoma of the skin. Arch Dermatol. 1972;105(1):107–110.</mixed-citation><mixed-citation xml:lang="ru">Toker C. Trabecular carcinoma of the skin // Arch Dermatol. 1972. Vol. 105, N 1. Р. 107–110.</mixed-citation></citation-alternatives></ref><ref id="B2"><label>2.</label><citation-alternatives><mixed-citation xml:lang="en">Bichakjian CK, Olencki T, Aasi SZ, et al. Merkel Cell Carcinoma, Version 1. NCCN Clinical Practice Guidelines in Oncology. J Natl Compr Canc Netw. 2018;16(6):742–774. doi: 10.6004/jnccn.2018.0055</mixed-citation><mixed-citation xml:lang="ru">Bichakjian C.K., Olencki T., Aasi S.Z., et al. Merkel Cell Carcinoma, Version 1. NCCN Clinical Practice Guidelines in Oncology // J Natl Compr Canc Netw. 2018. Vol. 16, N 6. Р. 742–774. doi: 10.6004/jnccn.2018.0055</mixed-citation></citation-alternatives></ref><ref id="B3"><label>3.</label><citation-alternatives><mixed-citation xml:lang="en">Clinical recommendations of “Merkel’s Carcinoma”. Ed. by Ya.V. Vishnevskaya, et al. Moscow: GEOTAR-Media; 2017. 29 p. (In Russ).</mixed-citation><mixed-citation xml:lang="ru">Клинические рекомендации «Карцинома Меркеля» / под ред. Я.В. Вишневской и др. Москва: ГЭОТАР-Медиа, 2017. 29 с.</mixed-citation></citation-alternatives></ref><ref id="B4"><label>4.</label><citation-alternatives><mixed-citation xml:lang="en">Kervarrec T, Samimi M, Guyétant S, et al. Histogenesis of merkel cell carcinoma: a comprehensive review. Front Oncol. 2019;9:451. doi: 10.3389/fonc.2019.00451</mixed-citation><mixed-citation xml:lang="ru">Kervarrec T., Samimi M., Guyétant S., et al. Histogenesis of merkel cell carcinoma: a comprehensive review // Front Oncol. 2019. Vol. 9. Р. 451. doi: 10.3389/fonc.2019.00451</mixed-citation></citation-alternatives></ref><ref id="B5"><label>5.</label><citation-alternatives><mixed-citation xml:lang="en">DeCaprio JA. Molecular pathogenesis of merkel cell carcinoma. Annu Rev Pathol. 2021;16:69–91. doi: 10.1146/annurev-pathmechdis-012419-032817</mixed-citation><mixed-citation xml:lang="ru">DeCaprio J.A. Molecular pathogenesis of merkel cell carcinoma // Annu Rev Pathol. 2021. Vol. 16. Р. 69–91. doi: 10.1146/annurev-pathmechdis-012419-032817</mixed-citation></citation-alternatives></ref><ref id="B6"><label>6.</label><citation-alternatives><mixed-citation xml:lang="en">Schadendorf D, Lebbé C, Hausen A, et al. Merkel cell carcinoma: Epidemiology, prognosis, therapy and unmet medical needs. Eur J Cancer. 2017;71:53–69. doi: 10.1016/j.ejca.2016.10.022</mixed-citation><mixed-citation xml:lang="ru">Schadendorf D., Lebbé C., Hausen A., et al. Merkel cell carcinoma: Epidemiology, prognosis, therapy and unmet medical needs // Eur J Cancer. 2017. Vol. 71. Р. 53–69. doi: 10.1016/j.ejca.2016.10.022</mixed-citation></citation-alternatives></ref><ref id="B7"><label>7.</label><citation-alternatives><mixed-citation xml:lang="en">Becker JC, Kauczok CS, Ugurel S, et al. Merkel cell carcinoma: Molecular pathogenesis, clinical features and therapy. JDDG J Ger Soc Dermatology. 2008;6:709–719. doi: 10.1111/j.1610-0387.2008.06830.x</mixed-citation><mixed-citation xml:lang="ru">Becker J.C., Kauczok C.S., Ugurel S., et al. Merkel cell carcinoma: Molecular pathogenesis, clinical features and therapy // JDDG J Ger Soc Dermatology. 2008. Vol. 6. Р. 709–719. doi: 10.1111/j.1610-0387.2008.06830.x</mixed-citation></citation-alternatives></ref><ref id="B8"><label>8.</label><citation-alternatives><mixed-citation xml:lang="en">Dellambra E, Carbone ML, Ricci F, et al. Merkel Cell Carcinoma. Biomedicines. 2021;9(7):718. doi: 10.3390/biomedicines9070718</mixed-citation><mixed-citation xml:lang="ru">Dellambra E., Carbone M.L., Ricci F., et al. Merkel Cell Carcinoma // Biomedicines. 2021. Vol. 9, N 7. Р. 718. doi: 10.3390/biomedicines9070718</mixed-citation></citation-alternatives></ref><ref id="B9"><label>9.</label><citation-alternatives><mixed-citation xml:lang="en">Harms KL, Healy MA, Nghiem P, et al. Analysis of prognostic factors from 9387 Merkel cell carcinoma cases forms the basis for the new 8th edition AJCC staging system. Ann Surg Oncol. 2016;23(11):3564. doi: 10.1245/s10434-016-5266-4</mixed-citation><mixed-citation xml:lang="ru">Harms K.L., Healy M.A, Nghiem P., et al. Analysis of prognostic factors from 9387 Merkel cell carcinoma cases forms the basis for the new 8th edition AJCC staging system // Ann Surg Oncol. 2016. Vol. 23, N 11. Р. 3564. doi: 10.1245/s10434-016-5266-4</mixed-citation></citation-alternatives></ref><ref id="B10"><label>10.</label><citation-alternatives><mixed-citation xml:lang="en">Schadendorf D, Lebbé C, Hausen A, et al. Merkel cell carcinoma: Epidemiology, prognosis, therapy and unmet medical needs. Eur J Cancer. 2017;71:53–69. doi: 10.1016/j.ejca.2016.10.022</mixed-citation><mixed-citation xml:lang="ru">Schadendorf D., Lebbé C., Hausen A., et al. Merkel cell carcinoma: Epidemiology, prognosis, therapy and unmet medical needs // Eur J Cancer. 2017. Vol. 71. Р. 53–69. doi: 10.1016/j.ejca.2016.10.022</mixed-citation></citation-alternatives></ref><ref id="B11"><label>11.</label><citation-alternatives><mixed-citation xml:lang="en">Heath M, Jaimes N, Lemos B, et al. Clinical characteristics of Merkel cell carcinoma at diagnosis in 195 patients: the AEIOU features. J Am Acad Dermatol. 2008;58(3):375. doi: 10.1016/j.jaad.2007.11.020</mixed-citation><mixed-citation xml:lang="ru">Heath M., Jaimes N., Lemos B., et al. Clinical characteristics of Merkel cell carcinoma at diagnosis in 195 patients: the AEIOU features // J Am Acad Dermatol. 2008. Vol. 58, N 3. Р. 375. doi: 10.1016/j.jaad.2007.11.020</mixed-citation></citation-alternatives></ref></ref-list></back></article>
