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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 Oncology</journal-id><journal-title-group><journal-title xml:lang="en">Russian Journal of Oncology</journal-title><trans-title-group xml:lang="ru"><trans-title>Российский онкологический журнал</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1028-9984</issn><issn publication-format="electronic">2412-9119</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">632423</article-id><article-id pub-id-type="doi">10.17816/onco632423</article-id><article-id pub-id-type="edn">ZCLYEY</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Original Study Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Оригинальные исследования</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">Clinical and Dermatoscopic Features of Amelanotic Cutaneous Melanoma: a Single-Center Experience</article-title><trans-title-group xml:lang="ru"><trans-title>Анализ клинических и дерматоскопических признаков беспигментной меланомы кожи (собственный опыт)</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4460-9136</contrib-id><contrib-id contrib-id-type="spin">7795-6512</contrib-id><name-alternatives><name xml:lang="en"><surname>Titov</surname><given-names>Konstantin  S.</given-names></name><name xml:lang="ru"><surname>Титов</surname><given-names>Константин Сергеевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Dr. Sci. (Medicine), Professor</p></bio><bio xml:lang="ru"><p>д-р мед. наук, профессор</p></bio><email>ks-titov@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6831-6971</contrib-id><contrib-id contrib-id-type="spin">3162-8607</contrib-id><name-alternatives><name xml:lang="en"><surname>Tamrazov</surname><given-names>Rasim I.</given-names></name><name xml:lang="ru"><surname>Тамразов</surname><given-names>Расим Ильхамович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Dr. Sci. (Medicine)</p></bio><bio xml:lang="ru"><p>д-р мед. наук</p></bio><email>rasim@tamrazov.com</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0005-9637-182X</contrib-id><contrib-id contrib-id-type="spin">2873-9797</contrib-id><name-alternatives><name xml:lang="en"><surname>Zykova</surname><given-names>Daria D.</given-names></name><name xml:lang="ru"><surname>Зыкова</surname><given-names>Дарья Давлетовна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>zyksss93@gmail.com</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7302-7456</contrib-id><contrib-id contrib-id-type="spin">8854-4339</contrib-id><name-alternatives><name xml:lang="en"><surname>Zhdanova</surname><given-names>Valeria V.</given-names></name><name xml:lang="ru"><surname>Жданова</surname><given-names>Валерия Вячеславовна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>Lera4598@mail.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0004-9785-237X</contrib-id><name-alternatives><name xml:lang="en"><surname>Sukharnik</surname><given-names>Eugenia I.</given-names></name><name xml:lang="ru"><surname>Сухарник</surname><given-names>Евгения Ивановна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>eva.sukharnik@mail.ru</email><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Botkin Moscow Multidisciplinary Research and Clinical Center</institution></aff><aff><institution xml:lang="ru">Московский многопрофильный научно-клинический центр имени С.П. Боткина</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Tyumen State Medical University</institution></aff><aff><institution xml:lang="ru">Тюменский государственный медицинский университет</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Medical City Multidisciplinary Clinical Medical Center</institution></aff><aff><institution xml:lang="ru">Многопрофильный клинический медицинский центр «Медицинский город»</institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2025-06-03" publication-format="electronic"><day>03</day><month>06</month><year>2025</year></pub-date><pub-date date-type="pub" iso-8601-date="2025-06-23" publication-format="electronic"><day>23</day><month>06</month><year>2025</year></pub-date><volume>30</volume><issue>1</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>25</fpage><lpage>30</lpage><history><date date-type="received" iso-8601-date="2024-05-27"><day>27</day><month>05</month><year>2024</year></date><date date-type="accepted" iso-8601-date="2025-05-20"><day>20</day><month>05</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Eco-Vector</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Эко-Вектор</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Eco-Vector</copyright-holder><copyright-holder xml:lang="ru">Эко-Вектор</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/" start_date="2028-06-23"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by-nc-nd/4.0/</ali:license_ref></license></permissions><self-uri xlink:href="https://rjonco.com/1028-9984/article/view/632423">https://rjonco.com/1028-9984/article/view/632423</self-uri><abstract xml:lang="en"><p><bold>BACKGROUND:</bold> Malignant skin tumors occupy the second place among all oncological diseases worldwide. The most aggressive among them is skin melanoma, and of particular interest is its subspecies — pigmentless melanoma, which occurs from 2 to 8% among all skin malignancies. The atypical dermatoscopic picture, the frequent detection of pigmented melanoma in advanced stages, and its aggressive course, which worsens long-term treatment results, require a closer study of the issue and improvement of methods for early detection of the disease.</p> <p><bold>AIM:</bold> Analysis of clinical cases of pigmented skin melanoma with assessment of pathognomonic clinical and dermatoscopic picture.</p> <p><bold>METHODS:</bold> A retrospective analysis of the data of patients with pigmentless melanoma of the skin provided from the cancer registry of the Tyumen region for 2018-2023 was performed.</p> <p><bold>RESULTS:</bold> During the study, it was revealed that at the initial request for medical help, most of the patients were not bothered by the existing pigmentation-free formation, and complaints of rapid growth of the lesion and contact bleeding were less common. When assessing the localization of tumors, it was found that pigmented melanoma was most common on the skin of the trunk (in 38.4%), less often on the skin of the head and neck (26.9%) and only in isolated cases on the skin of the upper and lower extremities. The primary lesion more often had the appearance of a node or papule, less often — spots or plaques. When assessing the dermatoscopic picture, vascular polymorphism became the most common feature (43.18%), regression zones were slightly less common. In exceptional cases, it was impossible to assess the dermatoscopic picture due to tumor disintegration.</p> <p><bold>CONCLUSION:</bold> The rare occurrence of pigmented skin melanoma in clinical practice, the atypical dermatoscopic picture of the primary focus and the asymptomatic course are predictors of late diagnosis of the disease, which exacerbates the further course of the oncological process and long-term treatment results. This indicates to us the need to increase cancer awareness regarding pigmented melanoma of the skin, and the study and identification of typical clinical and dermatoscopic signs is an essential step towards early diagnosis of the malignant pathology in question and timely treatment of patients.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Обоснование.</bold> Злокачественные опухоли кожи занимают второе место среди всех онкологических заболеваний по всему миру. Наиболее агрессивная среди них — меланома кожи, а особый интерес представляет её подвид — беспигментная меланома, встречающаяся от 2 до 8% среди всех злокачественных образований кожи. Атипичная дерматоскопическая картина, частое выявление беспигментной меланомы на запущенных стадиях, её агрессивное течение, ухудшающее отдалённые результаты лечения, требуют более пристального изучения вопроса и совершенствования методов раннего выявления заболевания.</p> <p><bold>Цель </bold>— анализ клинических случаев беспигментной меланомы кожи с оценкой патогномоничной клинической и дерматоскопической картины.</p> <p><bold>Материалы и методы.</bold> Выполнен ретроспективный анализ данных<bold> </bold>пациентов с беспигментной меланомой кожи, предоставленных из канцер-регистра Тюменской области за 2018–2023 гг.</p> <p><bold>Результаты.</bold> В ходе исследования было выявлено, что при первичном обращении за медицинской помощью большую часть пациентов существующее беспигментное образование не беспокоило, реже встречались жалобы на быстрый рост очага и контактную кровоточивость. При оценке локализации опухолей было выявлено, что беспигментная меланома наиболее часто встречалась на коже туловища (в 38,4%), реже — на кожных покровах головы и шеи (26,9%) и лишь в единичных случаях — на коже верхних и нижних конечностей. Первичный очаг чаще имел вид узла или папулы, реже — пятна или бляшки. При оценке дерматоскопической картины самым часто встречающимся признаком стал полиморфизм сосудов (43,18%), немного реже встречались зоны регресса. В исключительных случаях дерматоскопическую картину оценить было невозможно ввиду распада опухоли.</p> <p><bold>Заключение.</bold> Редкая встречаемость беспигментной меланомы кожи в клинической практике, атипичная дерматоскопическая картина первичного очага и бессимптомное течение являются предикторами поздней диагностики заболевания, что усугубляет дальнейшее течение онкологического процесса и отдалённые результаты лечения. Это указывает нам на необходимость повышения онконастороженности в отношении беспигментной меланомы кожи, а изучение и выявление типичных клинических и дерматоскопических признаков — неотъемлемый этап на пути к ранней диагностике рассматриваемой злокачественной патологии и своевременному лечению пациентов.</p></trans-abstract><kwd-group xml:lang="en"><kwd>cancer</kwd><kwd>malignant skin neoplasms</kwd><kwd>cutaneous melanoma</kwd><kwd>amelanotic cutaneous melanoma</kwd><kwd>clinical features</kwd><kwd>dermatoscopy</kwd><kwd>primary diagnosis</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>рак</kwd><kwd>злокачественные новообразования кожи</kwd><kwd>меланома кожи</kwd><kwd>беспигментная меланома кожи</kwd><kwd>клинические признаки</kwd><kwd>дерматоскопия</kwd><kwd>первичная диагностика</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Kirova MV, Shcherbakov PL, Khomeriki SG, et al. 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