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<article article-type="research-article" dtd-version="1.3" 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" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">avk</journal-id><journal-title-group><journal-title xml:lang="ru">Архивъ внутренней медицины</journal-title><trans-title-group xml:lang="en"><trans-title>The Russian Archives of Internal Medicine</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2226-6704</issn><issn pub-type="epub">2411-6564</issn><publisher><publisher-name>“SINAPS” LLC</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.20514/2226-6704-2025-15-6-443-451</article-id><article-id custom-type="edn" pub-id-type="custom">CKMHFO</article-id><article-id custom-type="elpub" pub-id-type="custom">avk-2132</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>РАЗБОР КЛИНИЧЕСКИХ СЛУЧАЕВ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ANALYSIS OF CLINICAL CASES</subject></subj-group></article-categories><title-group><article-title>Несвоевременность диагностики рака паращитовидной железы на фоне длительно существующей гиперкальциемии</article-title><trans-title-group xml:lang="en"><trans-title>Untimeliness of Diagnosis of Parathyroid Cancer on The Background of Long-Term Hypercalcemia</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7825-5597</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ларина</surname><given-names>В. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Larina</surname><given-names>V. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ларина Вера Николаевна — доктор медицинских наук, профессор, заведующий кафедрой</p><p>Москва </p></bio><bio xml:lang="en"><p>Vera N. Larina — M.D., professor </p><p>Moscow </p></bio><email xlink:type="simple">larinav@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9547-078X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кудина</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kudina</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кудина Екатерина Владимировна — кандидат медицинских наук, доцент </p><p>Москва </p></bio><bio xml:lang="en"><p>Ekaterina V. Kudina — M.D., associate professor </p><p>Moscow </p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5005-1461</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Амирян</surname><given-names>Д. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Amirian</surname><given-names>D. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Амирян Диана Севаковна — студент </p><p>Москва </p></bio><bio xml:lang="en"><p>Diana S. Amirian — student </p><p>Moscow </p></bio><email xlink:type="simple">diasha.am1234@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9991-546X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шерегова</surname><given-names>Е. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Sheregova</surname><given-names>E. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шерегова Елена Николаевна — кандидат медицинских наук, доцент </p><p>Москва </p></bio><bio xml:lang="en"><p>Elena N. Sheregova — associate professor </p><p>Moscow </p></bio><email xlink:type="simple">esheregova@list.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6271-228X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Замятин</surname><given-names>К. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Zamyatin</surname><given-names>K. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Замятин Кирилл Александрович — аспирант </p><p>Москва </p></bio><bio xml:lang="en"><p>Kirill A. Zamyatin — graduate student </p><p>Moscow </p></bio><email xlink:type="simple">kazamiatin@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Корсаева</surname><given-names>Л. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Korsaeva</surname><given-names>L. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Корсаева Людмила Алексеевна — врач общей практики, ДКЦ № 1, филиал 4, ДЗМ</p><p>Москва </p></bio><bio xml:lang="en"><p>Lyudmila A. Korsaeva — general doctor, DCC № 1, branch 4, Moscow Department of Health</p><p>Moscow </p></bio><email xlink:type="simple">Korsaevala@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Кафедра поликлинической терапии лечебного факультета ФГАОУ ВО «РНИМУ им. Н.И. Пирогова Минздрава России»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Department of Outpatient Medicine, Pirogov Russian National Research Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>01</day><month>12</month><year>2025</year></pub-date><volume>15</volume><issue>6</issue><fpage>443</fpage><lpage>451</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ларина В.Н., Кудина Е.В., Амирян Д.С., Шерегова Е.Н., Замятин К.А., Корсаева Л.А., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Ларина В.Н., Кудина Е.В., Амирян Д.С., Шерегова Е.Н., Замятин К.А., Корсаева Л.А.</copyright-holder><copyright-holder xml:lang="en">Larina V.N., Kudina E.V., Amirian D.S., Sheregova E.N., Zamyatin K.A., Korsaeva L.A.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.medarhive.ru/jour/article/view/2132">https://www.medarhive.ru/jour/article/view/2132</self-uri><abstract><p>Гиперкальциемия представляет собой нарушение минерального обмена, возникающее, как правило, в результате повышения функции паращитовидных желез с развитием гиперпаратиреоза. Данное состояние могу т спровоцировать различные факторы, например, развитие доброкачественной гиперплазии паращитовидных желез, облучение, употребление определенных лекарственных препаратов, снижение уровня кальция в организме, патология со стороны почек, а также нарушение функции паращитовидных желез и другие. Сложность диагностики данной патологии обусловлена как редкой встречаемостью, так и отсутствием патогномоничной симптоматики. Клинические проявления гиперкальциемии многообразны и проявляются патологией желудочно-кишечного тракта, нервной системы, а также развитием мочекаменной болезни и остеопорозом. Важность своевременного диагностирования гиперкальциемии обусловлена не только необходимостью улучшить качество жизни пациента и предотвратить развитие осложнений, но и возможностью раннего выявления наиболее грозной причины гиперпаратиреоза — рака паращитовидных желез. В статье обсуждается история болезни пациента 46 лет, отражающая позднюю диагностику гиперкальциемии и развитие рака паращитовидной железы, несмотря на длительно существующие клинические проявления гиперкальциемии и стойкие отклонения лабораторных показателей с повышением уровня щелочной фосфатазы; свободного и ионизированного кальция. Сделан акцент на проявлениях гиперкальциемии, которые должны были насторожить врачей и направить диагностический поиск в правильное русло. Подчеркивается важность тщательного сбора анамнеза и интерпретации каждого клинического проявления.</p></abstract><trans-abstract xml:lang="en"><p>Hypercalcemia is a disorder of mineral metabolism that typically arises due to increased parathyroid gland function, leading to hyperparathyroidism. This condition can be triggered by various factors, such as the development of benign parathyroid hyperplasia, radiation exposure, the use of certain medications, decreased calcium levels in the body, renal pathology, impaired parathyroid gland function, and others. The complexity of diagnosing this condition is attributed to its rare occurrence and the absence of pathognomonic symptoms. The clinical manifestations of hypercalcemia are diverse and include gastrointestinal and nervous system disorders, as well as the development of urolithiasis and osteoporosis. The importance of timely diagnosis of hypercalcemia lies not only in the need to improve the patient’s quality of life and prevent complications but also in the early detection of the most severe cause of hyperparathyroidism—parathyroid cancer. This article discusses the case history of a 46-year-old patient, illustrating the delayed diagnosis of hypercalcemia and the development of parathyroid cancer despite long-standing clinical manifestations of hypercalcemia and persistent laboratory abnormalities, including elevated levels of alkaline phosphatase, free and ionized calcium. The clinical case analysis emphasizes the manifestations of hypercalcemia that should have alerted clinicians and guided the diagnostic process in the right direction. The importance of thorough history-taking and the interpretation of each clinical manifestation is underscored.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>гиперкальциемия злокачественных новообразований</kwd><kwd>паратиреоидный гормон</kwd><kwd>паращитовидные железы</kwd><kwd>кальц ий</kwd></kwd-group><kwd-group xml:lang="en"><kwd>hypercalcemia of malignant neoplasms</kwd><kwd>parathyroid hormone</kwd><kwd>parathyroid glands</kwd><kwd>calcium</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Zhao L., He X. Advances in the molecular genetics of parathyroid tumors. Chin Med J (Engl). 2024; 137(3):376-378. doi: 10.1097/CM9.0000000000002935</mixed-citation><mixed-citation xml:lang="en">Zhao L., He X. Advances in the molecular genetics of parathyroid tumors. 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