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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">Head and Neck Tumors</journal-id><journal-title-group><journal-title xml:lang="en">Head and Neck Tumors</journal-title><trans-title-group xml:lang="ru"><trans-title>Опухоли головы и шеи</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2222-1468</issn><issn publication-format="electronic">2411-4634</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">134</article-id><article-id pub-id-type="doi">10.17650/2222-1468-2012-0-4-53-58</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>REVIEWS</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ОБЗОРНЫЕ СТАТЬИ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">SQUAMOUS CELL CARCINOMA METASTASES TO THE CERVICAL LYMPH NODES WITHOUT A PRIMARY FOCUS BEING DETECTED</article-title><trans-title-group xml:lang="ru"><trans-title>МЕТАСТАЗЫ ПЛОСКОКЛЕТОЧНОГО РАКА В ЛИМФАТИЧЕСКИЕ УЗЛЫ ШЕИ БЕЗ ВЫЯВЛЕННОГО ПЕРВИЧНОГО ОЧАГА</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Saprina</surname><given-names>O. A.</given-names></name><name xml:lang="ru"><surname>Саприна</surname><given-names>О. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Department of Craniomaxillofacial Tumors</p></bio><bio xml:lang="ru"><p>Отделение опухолей черепно-челюстно-лицевой области</p></bio><email>isabekian@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">N.N. Blokhin Russian Cancer Research Center, Russian Academy of Medical Sciences, Moscow</institution></aff><aff><institution xml:lang="ru">НИИ клинической онкологии ФГБНУ «Российский онкологический научный центр им. Н.Н. Блохина» РАМН, Москва</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2012-04-15" publication-format="electronic"><day>15</day><month>04</month><year>2012</year></pub-date><volume>2</volume><issue>4</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>53</fpage><lpage>58</lpage><history><date date-type="received" iso-8601-date="2015-04-19"><day>19</day><month>04</month><year>2015</year></date><date date-type="accepted" iso-8601-date="2015-04-19"><day>19</day><month>04</month><year>2015</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2012, Saprina O.A.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2012, Саприна О.А.</copyright-statement><copyright-year>2012</copyright-year><copyright-holder xml:lang="en">Saprina O.A.</copyright-holder><copyright-holder xml:lang="ru">Саприна О.А.</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/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://ogsh.abvpress.ru/jour/article/view/134">https://ogsh.abvpress.ru/jour/article/view/134</self-uri><abstract xml:lang="en"><p>The paper presents a review of literature on the most unstudied problem in head and neck oncology — the diagnosis and treatment of patients with cervical lymph node metastases without a primary focus being detected.</p></abstract><trans-abstract xml:lang="ru"><p>В статье представлен обзор литературы по наиболее неизученной проблеме в онкологии опухолей головы и шеи — диагностике и лечению пациентов с метастазами в лимфатические узлы шеи без выявленного первичного очага.</p></trans-abstract><kwd-group xml:lang="en"><kwd>squamous cell carcinoma</kwd><kwd>cervical lymph node metastases</kwd><kwd>primary focus</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>плоскоклеточный рак</kwd><kwd>метастазы в лимфатические узлы шеи</kwd><kwd>первичный очаг</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. 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