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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">problendo</journal-id><journal-title-group><journal-title xml:lang="ru">Проблемы Эндокринологии</journal-title><trans-title-group xml:lang="en"><trans-title>Problems of Endocrinology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0375-9660</issn><issn pub-type="epub">2308-1430</issn><publisher><publisher-name>Endocrinology Research Centre</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.14341/probl13221</article-id><article-id custom-type="elpub" pub-id-type="custom">problendo-13221</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>Клиническая эндокринология</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Clinical endocrinology</subject></subj-group></article-categories><title-group><article-title>Клинические проявления, принципы диагностики и лечения фосфатурических мезенхимальных опухолей, секретирующих фактор роста фибробластов 23: результаты наблюдения 40 случаев</article-title><trans-title-group xml:lang="en"><trans-title>Clinical features, diagnostics and treatment of FGF23 secreting tumors: series of 40 clinical cases</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7055-2407</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гронская</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Gronskaia</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Гронская Софья Александровна</p><p>SPIN-код: 7624-0391</p><p>117036, Москва, ул. Дмитрия Ульянова, д. 11</p></bio><bio xml:lang="en"><p>Sofia A. Gronskaia, MD</p><p>SPIN-код: 7624-0391</p><p>11 Dm. Ulyanova street, 117036 Moscow</p></bio><email xlink:type="simple">sofyaants@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/0000-0002-6674-6441</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Белая</surname><given-names>Ж. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Belaya</surname><given-names>Zh. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Белая Жанна Евгеньевна, д.м.н., профессор</p><p>SPIN-код: 4746-7173</p><p>Москва</p></bio><bio xml:lang="en"><p>Zhanna E. Belaya, MD, PhD, Professor</p><p>SPIN-код: 4746-7173</p><p>Moscow</p></bio><email xlink:type="simple">jannabelaya@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/0000-0001-7041-0732</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Рожинская</surname><given-names>Л. Я.</given-names></name><name name-style="western" xml:lang="en"><surname>Rozhinskaya</surname><given-names>L. Ya.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Рожинская Людмила Яковлевна д.м.н., профессор</p><p>SPIN-код: 5691-7775</p><p>Москва</p></bio><bio xml:lang="en"><p>Liudmila Ya. Rozhinskaya, MD, PhD, professor</p><p>SPIN-код: 5691-7775</p><p>Moscow</p></bio><email xlink:type="simple">lrozhinskaya@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/0000-0002-5634-7877</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мельниченко</surname><given-names>Г. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Melnichenko</surname><given-names>G. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мельниченко Галина Афанасьевна, академик РАН, д.м.н., профессор</p><p>SPIN-код: 8615-0038</p><p>Москва</p></bio><bio xml:lang="en"><p>Galina A. Melnichenko, MD, PhD, Professor</p><p>SPIN-код: 8615-0038</p><p>Moscow</p></bio><email xlink:type="simple">teofrast2000@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/0000-0003-1413-1549</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Дубовицкая</surname><given-names>Т. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Dubovitskaya</surname><given-names>T. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Дубовицкая Татьяна Алексеевна, к.м.н.</p><p>SPIN-код: 4380-5447</p><p>Москва</p></bio><bio xml:lang="en"><p>Tatiana A. Dubovitskaya, MD, PhD</p><p>SPIN-код: 4380-5447</p><p>Moscow</p></bio><email xlink:type="simple">grebennikova@hotmail.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/0000-0002-9783-3599</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мамедова</surname><given-names>Е. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Mamedova</surname><given-names>E. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мамедова Елизавета Октаевна, к.м.н.</p><p>SPIN-код: 3904-6017</p><p>Москва</p></bio><bio xml:lang="en"><p>Elizaveta O. Mamedova, MD, PhD</p><p>SPIN-код: 3904-6017</p><p>Moscow</p></bio><email xlink:type="simple">Lilybet@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/0000-0002-2726-8758</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Родионова</surname><given-names>С. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Rodionova</surname><given-names>S. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Родионова Светлана Семеновна, д.м.н.</p><p>Москва</p></bio><bio xml:lang="en"><p>Svetlana S. Rodionova, MD, PhD</p><p>Moscow</p></bio><email xlink:type="simple">rod06@inbox.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0039-2118</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Буклемишев</surname><given-names>Ю. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Buklemishev</surname><given-names>Yu. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Буклемишев Юрий Витальевич</p><p>SPIN-код: 4329-4720</p><p>Москва</p></bio><bio xml:lang="en"><p>Yuri V. Buklemishev, MD</p><p>SPIN-код: 4329-4720</p><p>Moscow</p></bio><email xlink:type="simple">buklemishev@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6539-466X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пигарова</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Pigarova</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Пигарова Екатерина Александровна, к.м.н.</p><p>SPIN-код: 6912-6331</p><p>Москва</p></bio><bio xml:lang="en"><p>Ekaterina А. Pigarova, M.D., PhD</p><p>SPIN-код: 6912-6331</p><p>Moscow</p></bio><email xlink:type="simple">kpigarova@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/0000-0001-5652-2607</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Дегтярев</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Degtyarev</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Дегтярев Михаил Владимирович</p><p>SPIN-код: 7725-7831</p><p>Москва</p></bio><bio xml:lang="en"><p>Mikhail V. Degtyarev, MD</p><p>SPIN-код: 7725-7831</p><p>Moscow</p></bio><email xlink:type="simple">germed@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/0000-0002-2812-7017</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бабаева</surname><given-names>Д. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Babaeva</surname><given-names>D. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Бабаева Диана Мажлумовна</p><p>SPIN-код: 6431-9855</p><p>Москва</p></bio><bio xml:lang="en"><p>Diana M. Babaeva, MD</p><p>SPIN-код: 6431-9855</p><p>Moscow</p></bio><email xlink:type="simple">dianababaeva1@yandex.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/0000-0002-7775-7568</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Владимирова</surname><given-names>В. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Vladimirova</surname><given-names>V. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Владимирова Виктория Павловна, к.м.н.</p><p>SPIN-код: 9830-3276</p><p>Москва</p></bio><bio xml:lang="en"><p>Victoriya P. Vladimirova, MD, PhD</p><p>SPIN-код: 9830-3276</p><p>Moscow</p></bio><email xlink:type="simple">vpv970@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/0000-0001-7965-9454</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тарбаева</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Tarbaeva</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Тарбаева Наталья Викторовна, к.м.н., врач-рентгенолог</p><p>SPIN-код: 5808-8065</p><p>Москва</p></bio><bio xml:lang="en"><p>Natalia V. Tarbaeva, MD, PhD</p><p>SPIN-код: 5808-8065</p><p>Moscow</p></bio><email xlink:type="simple">ntarbaeva@inbox.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/0000-0003-2326-1396</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Серженко</surname><given-names>С. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Serzhenko</surname><given-names>S. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Серженко Сергей Сергеевич</p><p>SPIN-код: 4713-8986</p><p>Москва</p></bio><bio xml:lang="en"><p>Sergey S. Serzhenko, MD</p><p>SPIN-код: 4713-8986</p><p>Moscow</p></bio><email xlink:type="simple">vv1ld@yandex.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/0000-0002-9575-4520</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Григорьев</surname><given-names>А. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Grigoriev</surname><given-names>A. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Григорьев Андрей Юрьевич, д.м.н., профессор</p><p>SPIN-код: 8910-8130</p><p>Москва</p></bio><bio xml:lang="en"><p>Andrey Yu. Grigoriev, Sc.D., prof.</p><p>SPIN-код: 8910-8130</p><p>Moscow</p></bio><email xlink:type="simple">medway26@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/0000-0002-0327-4619</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Дзеранова</surname><given-names>Л. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Dzeranova</surname><given-names>L. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Дзеранова Лариса Константиновна, д.м.н.</p><p>SPIN-код: 2958-5555</p><p>Москва</p></bio><bio xml:lang="en"><p>Larisa K. Dzeranova, MD, PhD</p><p>SPIN-код: 2958-5555</p><p>Moscow</p></bio><email xlink:type="simple">dzeranovalk@yandex.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/0000-0002-8280-8163</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Карпенко</surname><given-names>В. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Karpenko</surname><given-names>V. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Карпенко Вадим Юрьевич, д.м.н.</p><p>Москва</p></bio><bio xml:lang="en"><p>Vadim Y. Karpenko</p><p>Moscow</p></bio><email xlink:type="simple">doctor-kv@yandex.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3356-5193</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Карасев</surname><given-names>А. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Karasev</surname><given-names>A. L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Карасев Анатолий Леонидович</p><p>Москва</p></bio><bio xml:lang="en"><p>Anatoly L. Karasev</p><p>Moscow</p></bio><email xlink:type="simple">karaseva81@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1802-1080</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Федотов</surname><given-names>Р. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Fedotov</surname><given-names>R. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Федотов Роман Николаевич, к.м.н., доцент</p><p>Москва</p></bio><bio xml:lang="en"><p>Roman N. Fedotov</p><p>Moscow</p></bio><email xlink:type="simple">abilat@mail.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ульянова</surname><given-names>И. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Uliyanova</surname><given-names>I. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ульянова Ирина Николаевна, к.м.н.</p><p>Москва</p></bio><bio xml:lang="en"><p>Irina N. Ulyanova</p><p>Moscow</p></bio><email xlink:type="simple">Ulyanova.Irina@endocrincentr.ru</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>Торопцова</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Toroptsova</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Торопцова Наталья Владимировна, д.м.н.</p><p>SPIN-код: 5650-2058</p><p>Москва</p></bio><bio xml:lang="en"><p>Natalia V. Toroptsova, MD, PhD</p><p>SPIN-код: 5650-2058</p><p>Moscow</p></bio><email xlink:type="simple">toroptsovan@mail.ru</email><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0143-0614</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лесняк</surname><given-names>О. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Lesnyak</surname><given-names>O. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Лесняк Ольга Михайловна, д.м.н., профессор</p><p>SPIN-код: 6432-4188</p><p>Санкт-Петербург</p></bio><bio xml:lang="en"><p>Olga M. Lesnyak, MD, PhD, Professor</p><p>SPIN-код: 6432-4188</p><p>Saint Petersburg</p></bio><email xlink:type="simple">olga.m.lesnyak@yandex.ru</email><xref ref-type="aff" rid="aff-5"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9717-9742</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мокрышева</surname><given-names>Н. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Mokrysheva</surname><given-names>N. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мокрышева Наталья Георгиевна, д.м.н., профессор</p><p>SPIN-код: 5624-3875</p><p>Москва</p></bio><bio xml:lang="en"><p>Natalia G. Mokrysheva, MD, PhD, Professor</p><p>SPIN-код: 5624-3875</p><p>Moscow</p></bio><email xlink:type="simple">nm70@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/0000-0002-8175-7886</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Дедов</surname><given-names>И. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Dedov</surname><given-names>I. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Дедов Иван Иванович, д.м.н., академик РАН</p><p>SPIN-код: 5873-2280</p><p>Москва</p></bio><bio xml:lang="en"><p>Ivan I. Dedov, MD, PhD, Professor</p><p>SPIN-код: 5873-2280</p><p>Moscow</p></bio><email xlink:type="simple">dedov@endocrincentr.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Национальный медицинский исследовательский центр эндокринологии</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Endocrinology Research Center</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Национальный медицинский исследовательский центр травматологии и ортопедии им. Н.Н. Приорова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>N.N. Priorov National Medical Research Center of Traumatology and Orthopaedics</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Московский государственный медико-стоматологический университет им. А.И. Евдокимова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>A.I. Yevdokimov Moscow State University of Medicine and Dentistry</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Научно-исследовательский институт ревматологии им. В.А. Насоновой</institution><country>Россия</country></aff><aff xml:lang="en"><institution>V.A. Nasonova Research Institute of Rheumatology</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-5"><aff xml:lang="ru"><institution>Северо-Западный государственный медицинский университет им. И.И. Мечникова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>North-Western State Medical University named after I.I. Mechnikov</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>10</day><month>11</month><year>2023</year></pub-date><volume>69</volume><issue>5</issue><fpage>25</fpage><lpage>38</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Гронская С.А., Белая Ж.Е., Рожинская Л.Я., Мельниченко Г.А., Дубовицкая Т.А., Мамедова Е.О., Родионова С.С., Буклемишев Ю.В., Пигарова Е.А., Дегтярев М.В., Бабаева Д.М., Владимирова В.П., Тарбаева Н.В., Серженко С.С., Григорьев А.Ю., Дзеранова Л.К., Карпенко В.Ю., Карасев А.Л., Федотов Р.Н., Ульянова И.Н., Торопцова Н.В., Лесняк О.М., Мокрышева Н.Г., Дедов И.И., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Гронская С.А., Белая Ж.Е., Рожинская Л.Я., Мельниченко Г.А., Дубовицкая Т.А., Мамедова Е.О., Родионова С.С., Буклемишев Ю.В., Пигарова Е.А., Дегтярев М.В., Бабаева Д.М., Владимирова В.П., Тарбаева Н.В., Серженко С.С., Григорьев А.Ю., Дзеранова Л.К., Карпенко В.Ю., Карасев А.Л., Федотов Р.Н., Ульянова И.Н., Торопцова Н.В., Лесняк О.М., Мокрышева Н.Г., Дедов И.И.</copyright-holder><copyright-holder xml:lang="en">Gronskaia S.A., Belaya Z.E., Rozhinskaya L.Y., Melnichenko G.A., Dubovitskaya T.A., Mamedova E.O., Rodionova S.S., Buklemishev Y.V., Pigarova E.A., Degtyarev M.V., Babaeva D.M., Vladimirova V.P., Tarbaeva N.V., Serzhenko S.S., Grigoriev A.Y., Dzeranova L.K., Karpenko V.Y., Karasev A.L., Fedotov R.N., Uliyanova I.N., Toroptsova N.V., Lesnyak O.M., Mokrysheva N.G., Dedov I.I.</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.probl-endojournals.ru/jour/article/view/13221">https://www.probl-endojournals.ru/jour/article/view/13221</self-uri><abstract><sec><title>Обоснование</title><p>Обоснование. Опухоль-индуцированная остеомаляция — это редкое приобретенное заболевание, проявляющееся гипофосфатемической остеомаляцией, связанной с избыточной секрецией фактора роста фибробластов 23 (ФРФ23). ФРФ23 в норме секретируется костной тканью (остеоцитами) и регулирует обмен фосфора, способствуя его выведению почками, то есть является неклассическим гормоном.</p></sec><sec><title>Цель</title><p>Цель. Представление клинического опыта по диагностике, лечению и реабилитации пациентов с опухоль-индуцированной остеомаляцией.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. В наблюдение были включены 40 пациентов с клинически диагностированной опухоль-индуцированной остеомаляцией, у 34 из которых опухоль была локализована, 27 прооперированы и 21 достигли стойкой ремиссии.</p></sec><sec><title>Результаты</title><p>Результаты. Медиана возраста составила 48 [41; 63] лет на момент диагностики, 43% пациентов — мужчины, время от первых симптомов до установления диагноза составило 8 [4; 10] лет. Лабораторно у пациентов отмечались гипофосфатемия — 0,47 [0,4; 0,53] ммоль/л, снижение индекса реабсорбции фосфатов — 62 [52; 67]% и повышение активности щелочной фосфатазы — 183 [112; 294] Ед/л. На момент установления диагноза все пациенты имели множественные патологические переломы, передвигаться полностью самостоятельно могли лишь 10%, при этом все испытывали болевой синдром, в том числе 77,5% больных охарактеризовали боль выше 8 баллов (по 10-балльной шкале). Среди методов, используемых для обнаружения опухолей, самыми чувствительными оказались сцинтиграфия с тектротидом с однофотонной эмиссионной компьютерной томографией, совмещенной с компьютерной томографией (ОФЭКТ/КТ) — 71,4% (20/28) и магнитно-резонансной томографией (МРТ) — 90% (18/20). В 35% случаев опухоль была локализована в мягких тканях и в 65% — в костной ткани; при этом наиболее часто опухоль выявлялась в нижних конечностях, далее по частоте следовала локализация в голове. У 18 из 40 пациентов в настоящее время отсутствует ремиссия, и они получают консервативное лечение (препараты фосфора и альфакальцидол (n=15) и буросумаб (n=3)). В случае достижения ремиссии (n=21) наблюдались регресс клинической симптоматики и восстановление костной и мышечной массы. Широкое иссечение опухоли без предварительной биопсии приводило к наилучшему проценту ремиссии — 87%.</p></sec><sec><title>Заключение</title><p>Заключение. Опухоль-индуцированная остеомаляция наиболее часто встречается у лиц средней возрастной группы, характеризуется тяжелым поражением костной и мышечной ткани с развитием множественных переломов, мышечной слабости и выраженного болевого синдрома. При лабораторной диагностике следует обращать внимание на гипофосфатемию, снижение индекса реабсорбции фосфатов и повышенную активность щелочной фосфатазы. Применение методов функциональной диагностики с препаратами, связывающимися с рецепторами соматостатина 2A подтипа, и МРТ с контрастным усилением являются наиболее точными методами топической диагностики. В случае локализации опухоли рекомендуется широкое иссечение без предварительной биопсии.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction: Tumor-induced osteomalacia is an acquired rare disease manifested by hypophosphatemic osteomalacia due to excessive secretion of fibroblast growth factor 23 (FGF23). FGF 23 is a non-classical hormone secreted by bone tissue (osteocytes) and regulates phosphorus metabolism.</p><p>The aim of this work is to present clinical experience in the diagnosis, treatment and rehabilitation of patients with tumor-induced osteomalacia.</p></sec><sec><title>Materials and methods</title><p>Materials and methods: 40 patients with clinically-confirmed tumor-induced osteomalacia were included in the study, 34 of whom had the tumor localized, 27 underwent surgical treatment and 21 achieved stable remission.</p></sec><sec><title>Results</title><p>Results: The median age was 48 [41; 63] years, 43% were men, the time left from the the onset of the disease was 8 [4; 10] years. Biochemical findings were hypophosphatemia 0.47 [0.4; 0.53] mmol/l, a decrease in the tubular reabsorption phosphate 62 [52; 67]%, and an increase in alkaline phosphatase of 183 [112; 294] units/l. At the time of diagnosis, 100% had multiple pathological fractures, only 10% could move independently, and 77.5% classified the pain as unbearable (8–10 points according to the 10-point pain syndrome scale ). Among the methods used to detect tumors, the most sensitive were scintigraphy with tectrotide with SPECT/CT 71.4% (20/28) and MRI 90% (18/20). In 35% of cases, the tumor was localized in soft tissues and in 65% in bone tissue; The tumor was most often detected in the lower extremities, followed by the head in frequency of localization. 18 patients currently have no remission and they receive conservative treatment (phosphorus and alfacalcidol n=15 and burosumab n=3). In case of achieving remission (n=21), regression of clinical symptoms and restoration of bone and muscle mass was observed. Extensive excision of the tumor without prior biopsy resulted in the best percentage of remission — 87%.</p></sec><sec><title>Conclusion</title><p>Conclusion: Tumor-induced osteomalacia is characterized by severe damage to bone and muscle tissue with the development of multiple fractures, muscle weakness and severe pain syndrome. In laboratory diagnostics, attention should be paid to hypophosphatemia, a decrease in the tubular reabsorption phosphate index and increased alkaline phosphatase. The use of functional diagnostic methods with a labeled somatostatin analogue to the subtype 2 receptor and MRI with contrast enhancement are the most accurate methods of topical diagnostics. In case of localization of the tumor, a wide excision without a preliminary biopsy is recommended.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>гипофосфатемия</kwd><kwd>фосфор</kwd><kwd>остеомаляция</kwd><kwd>опухоль</kwd><kwd>ФРФ23</kwd><kwd>остеопороз</kwd><kwd>паратиреоидный гормон (ПТГ)</kwd></kwd-group><kwd-group xml:lang="en"><kwd>hypophosphatemia</kwd><kwd>phosphorus</kwd><kwd>osteomalacia</kwd><kwd>tumor</kwd><kwd>FGF23</kwd><kwd>osteoporosis</kwd><kwd>parathyroid hormone</kwd><kwd>(PTH)</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа проведена при финансовой поддержке Министерства здравоохранения Российской Федерации в рамках выполнения государственного задания «Разработка персонализированных подходов к диагностике и лечению пациентов с остеопорозом вследствие эндокринопатий на основании изучения молекулярно-генетических предикторов, применения инновационных методов диагностики и исследования патогенеза редких заболеваний скелета» № 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