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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">Oncohematology</journal-id><journal-title-group><journal-title xml:lang="en">Oncohematology</journal-title><trans-title-group xml:lang="ru"><trans-title>Онкогематология</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1818-8346</issn><issn publication-format="electronic">2413-4023</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">946</article-id><article-id pub-id-type="doi">10.17650/1818-8346-2024-19-3-142-148</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>RARE AND COMPLEX CLINICAL SITUATIONS: DIAGNOSIS AND TREATMENT CHOICE</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>РЕДКИЕ И СЛОЖНЫЕ КЛИНИЧЕСКИЕ СИТУАЦИИ: ДИАГНОСТИКА И ВЫБОР ТАКТИКИ ЛЕЧЕНИЯ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Difficulties of primary diagnosis in patients with suspected systemic mastocytosis</article-title><trans-title-group xml:lang="ru"><trans-title>Сложности первичной диагностики у пациентов с подозрением на системный мастоцитоз</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0002-7562-4072</contrib-id><name-alternatives><name xml:lang="en"><surname>Abdulkhalikova</surname><given-names>Z. K.</given-names></name><name xml:lang="ru"><surname>Абдулхаликова</surname><given-names>З. К.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><bold>Zarema K. Abdulkhalikova </bold></p><p><italic>6–8 L’va Tolstogo St., Saint Petersburg 197022</italic></p></bio><bio xml:lang="ru"><p><bold>Зарема Кайтмазовна Абдулхаликова </bold></p><p><italic>197022 Санкт-Петербург, ул. Льва Толстого, 6–8</italic></p></bio><email>dr.abdulhalikova@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5273-5581</contrib-id><name-alternatives><name xml:lang="en"><surname>Barabanshchikova</surname><given-names>M. V.</given-names></name><name xml:lang="ru"><surname>Барабанщикова</surname><given-names>М. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>6–8 L’va Tolstogo St., Saint Petersburg 197022</italic></p></bio><bio xml:lang="ru"><p><italic>197022 Санкт-Петербург, ул. Льва Толстого, 6–8</italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9191-5091</contrib-id><name-alternatives><name xml:lang="en"><surname>Baykov</surname><given-names>V. V.</given-names></name><name xml:lang="ru"><surname>Байков</surname><given-names>В. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>6–8 L’va Tolstogo St., Saint Petersburg 197022</italic></p></bio><bio xml:lang="ru"><p><italic>197022 Санкт-Петербург, ул. Льва Толстого, 6–8</italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8000-3652</contrib-id><name-alternatives><name xml:lang="en"><surname>Barkhatov</surname><given-names>I. M.</given-names></name><name xml:lang="ru"><surname>Бархатов</surname><given-names>И. М.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>6–8 L’va Tolstogo St., Saint Petersburg 197022</italic></p></bio><bio xml:lang="ru"><p><italic>197022 Санкт-Петербург, ул. Льва Толстого, 6–8</italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0752-0757</contrib-id><name-alternatives><name xml:lang="en"><surname>Morozova</surname><given-names>E. V.</given-names></name><name xml:lang="ru"><surname>Морозова</surname><given-names>Е. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>6–8 L’va Tolstogo St., Saint Petersburg 197022</italic></p></bio><bio xml:lang="ru"><p><italic>197022 Санкт-Петербург, ул. Льва Толстого, 6–8</italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4332-0114</contrib-id><name-alternatives><name xml:lang="en"><surname>Moiseev</surname><given-names>I. S.</given-names></name><name xml:lang="ru"><surname>Моисеев</surname><given-names>И. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>6–8 L’va Tolstogo St., Saint Petersburg 197022</italic></p></bio><bio xml:lang="ru"><p><italic>197022 Санкт-Петербург, ул. Льва Толстого, 6–8</italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Raisa Gorbacheva Memorial Research Institute for Pediatric Oncology, Hematology and Transplantation, I.P. Pavlov First Saint Petersburg State Medical University, Ministry of Health of Russia</institution></aff><aff><institution xml:lang="ru">НИИ детской онкологии, гематологии и трансплантологии им. Р.М. Горбачевой ФГБУ ВО «Первый Санкт-Петербургский государственный медицинский университет им. акад. И.П. Павлова» Минздрава России</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2024-09-03" publication-format="electronic"><day>03</day><month>09</month><year>2024</year></pub-date><volume>19</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>142</fpage><lpage>148</lpage><history><date date-type="received" iso-8601-date="2024-09-02"><day>02</day><month>09</month><year>2024</year></date><date date-type="accepted" iso-8601-date="2024-09-02"><day>02</day><month>09</month><year>2024</year></date></history><permissions><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/></permissions><self-uri xlink:href="https://oncohematology.abvpress.ru/ongm/article/view/946">https://oncohematology.abvpress.ru/ongm/article/view/946</self-uri><abstract xml:lang="en"><p><bold>Background. </bold>Mastocytosis is a rare myeloproliferative disease based on clonal hematopoiesis of mast cells, with accumulation of mast cells in various tissues and organs. The cutaneous mastocytosis is common in the pediatric population and, in general, progression to aggressive forms is not typical. In the adult population, there is systemic mastocytosis with a predominance of indolent and smoldering forms according to the literature, but there aren’t epidemiological data for the Russian Federation.</p><p><bold>Aim. </bold>To evaluate the results of primary diagnostics obtained during the examination of 70 patients with suspected systemic mastocytosis.</p><p><bold>Materials and methods. </bold>The histological studies of the skin and bone marrow, mutations in the <italic>c-kit </italic>gene in the bone marrow and serum tryptase level were examined in the Raisa Gorbacheva Memorial Research Institute for Pediatric Oncology, Hematology and Transplantation in accordance with WHO 2017 criteria.</p><p><bold>Results.</bold><bold> </bold>The diagnostic results of 70 patients with suspected mastocytosis, the diagnosis was confirmed in 71.4 % (<italic>n</italic><italic> </italic>= 50) of patients, of which systemic mastocytosis accounted for 82 % (<italic>n </italic>= 41). The 2 most common categories were identified: indolent systemic mastocytosis in 23 (56 %) patients and widespread forms in 15 (36.5 %), with a median time of diagnosis of 12 and 5 years, respectively.</p><p><bold>Conclusion. </bold>The late diagnosis is noted in all subgroups of systemic mastocytosis.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Введение. </bold>Мастоцитоз – редкое миелопролиферативное заболевание, характеризующееся клональным гемопоэзом тучных клеток с их последующим накоплением в различных тканях и органах. Среди детской популяции распространен кожный мастоцитоз, который обычно не развивается в агрессивные формы. Во взрослой популяции, согласно данным литературы, преобладает системный мастоцитоз, преимущественно индолентная и тлеющая формы, однако эпидемиологических данных по России на сегодняшний день нет.</p><p><bold>Цель исследования </bold>– оценить результаты первичной диагностики, полученные при обследовании 70 пациентов с подозрением на системный мастоцитоз.</p><p><bold>Материалы и методы. </bold>На базе НИИ ДОГиТ им. Р.М. Горбачевой в соответствии с критериями Всемирной организации здравоохранения 2017 г. были выполнены гистологические исследования кожи и костного мозга, определение мутации в гене <italic>с-KIT </italic>костного мозга и уровня сывороточной триптазы.</p><p><bold>Результаты.</bold><bold> </bold>Диагноз подтвердился у 50 (71,4 %) пациентов, из них системный мастоцитоз – у 41 (82 %). Выделены 2 наиболее распространенные категории: индолентный системный мастоцитоз – у 23 (56 %) пациентов, распространенные формы – у 15 (36,5 %); медиана времени постановки диагноза 12 и 5 лет соответственно.</p><p><bold>Заключение. </bold>Во всех подгруппах отмечается поздняя диагностика системного мастоцитоза.</p></trans-abstract><kwd-group xml:lang="en"><kwd>mastocytosis</kwd><kwd>tryptase</kwd><kwd>KIT D816V</kwd><kwd>mast cells</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>мастоцитоз</kwd><kwd>триптаза</kwd><kwd>KIT D816V</kwd><kwd>тучные клетки</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Akin C., Valent P. Diagnostic criteria and classification of mastocytosis in 2014. Immunol Allergy Clin North Am 2014;34(2):207–18. DOI: 10.1016/j.iac.2014.02.003</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Khoury J.D., Solary E., Abla O. et al. 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