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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 Pediatric Surgery</journal-id><journal-title-group><journal-title xml:lang="en">Russian Journal of Pediatric Surgery</journal-title><trans-title-group xml:lang="ru"><trans-title>Детская хирургия</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1560-9510</issn><issn publication-format="electronic">2412-0677</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">831</article-id><article-id pub-id-type="doi">10.17816/ps831</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Case reports</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Клинические случаи</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">A calcifying epithelioma of Malherbe: a clinical case</article-title><trans-title-group xml:lang="ru"><trans-title>Кальцифицирующаяся эпителиома Малерба: клиническое наблюдение</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9831-4814</contrib-id><contrib-id contrib-id-type="spin">2181-4935</contrib-id><name-alternatives><name xml:lang="en"><surname>Isaev</surname><given-names>Pavel A.</given-names></name><name xml:lang="ru"><surname>Исаев</surname><given-names>Павел Анатольевич</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>isaev@mrrc.obninsk.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0857-321X</contrib-id><contrib-id contrib-id-type="spin">5604-2012</contrib-id><name-alternatives><name xml:lang="en"><surname>Polkin</surname><given-names>Viatcheslav V.</given-names></name><name xml:lang="ru"><surname>Полькин</surname><given-names>Вячеслав Викторович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Cand. Sci. (Medicine)</p></bio><bio xml:lang="ru"><p>канд. мед. наук</p></bio><email>polkin83@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6581-633X</contrib-id><contrib-id contrib-id-type="spin">2493-6490</contrib-id><name-alternatives><name xml:lang="en"><surname>Ilyin</surname><given-names>Alexey A.</given-names></name><name xml:lang="ru"><surname>Ильин</surname><given-names>Алексей Амурович</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>ilin.grand@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0005-5043-7301</contrib-id><name-alternatives><name xml:lang="en"><surname>Vatina</surname><given-names>Liana N.</given-names></name><name xml:lang="ru"><surname>Ватина</surname><given-names>Лиана Нодарьевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p id="tw-target-text">Clinical Resident</p></bio><bio xml:lang="ru"><p>аспирант</p></bio><email>vatina1995@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4369-0246</contrib-id><name-alternatives><name xml:lang="en"><surname>Yakusheva</surname><given-names>Anastasia S.</given-names></name><name xml:lang="ru"><surname>Якушева</surname><given-names>Анастасия Сергеевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>Nastmed10@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4840-7163</contrib-id><name-alternatives><name xml:lang="en"><surname>Rizhenkova</surname><given-names>Mariya I.</given-names></name><name xml:lang="ru"><surname>Рыженкова</surname><given-names>Мария Игоревна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>m.r.1984@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7689-6032</contrib-id><name-alternatives><name xml:lang="en"><surname>Ivanov</surname><given-names>Sergei A.</given-names></name><name xml:lang="ru"><surname>Иванов</surname><given-names>Сергей Анатольевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Dr. Sci. (Medicine), Professor, Corresponding Member of the RAS</p></bio><bio xml:lang="ru"><p>д-р мед. наук, чл.-корр. РАН</p></bio><email>mrrc@mrrc.obninsk.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8784-8415</contrib-id><contrib-id contrib-id-type="spin">1759-8101</contrib-id><name-alternatives><name xml:lang="en"><surname>Kaprin</surname><given-names>Andrey D.</given-names></name><name xml:lang="ru"><surname>Каприн</surname><given-names>Андрей Дмитриевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Dr. Sci. (Medicine), Professor, Academician of the Russian Academy of Sciences</p></bio><bio xml:lang="ru"><p>д-р мед. наук, профессор, академик РАН</p></bio><email>kaprin@mail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">National Medical Research Radiological Center</institution></aff><aff><institution xml:lang="ru">Национальный медицинский исследовательский центр радиологии</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Peoples' Friendship University of Russia</institution></aff><aff><institution xml:lang="ru">Российский университет дружбы народов им. Патриса Лумумбы</institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2025-02-25" publication-format="electronic"><day>25</day><month>02</month><year>2025</year></pub-date><pub-date date-type="pub" iso-8601-date="2025-03-17" publication-format="electronic"><day>17</day><month>03</month><year>2025</year></pub-date><volume>29</volume><issue>1</issue><issue-title xml:lang="ru"/><fpage>68</fpage><lpage>75</lpage><history><date date-type="received" iso-8601-date="2024-08-29"><day>29</day><month>08</month><year>2024</year></date><date date-type="accepted" iso-8601-date="2025-02-11"><day>11</day><month>02</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="2026-03-17"/></permissions><self-uri xlink:href="https://jps-nmp.ru/jour/article/view/831">https://jps-nmp.ru/jour/article/view/831</self-uri><abstract xml:lang="en"><p><bold>BACKGROUND</bold>: Calcifying Malherbe epithelioma is one of the most common tumors in children. It is localized mainly on the scalp and neck. The tumor is an asymptomatic, single, spherical, slow-growing subcutaneous formation of dense consistency, up to 3 cm in diameter. Experienced surgeons sometimes remove this neoplasm without prior diagnosis. Based on the presented case of calcifying Malherbe epithelioma in a 7-year-old girl, we want to determine through a retrospective analysis of her medical documents whether only a physical examination will allow a differential diagnosis and a correct diagnosis.</p> <p><bold>CLINICAL CASE DESCRIPTION</bold>: The girl’s parents saw some lesion on the distal part of her right shoulder. On examination, a physician revealed a subcutaneous tumor up to 2 cm in size, bluish in color, limited in mobility by palpation and painless. At surgery, the tumour was widely excised. Histopathological analysis confirmed the diagnosis of a calcifying epithelioma of Malherbe.</p> <p><bold>CONCLUSION</bold>: Calcifying epithelioma of Malherbe is a rare tumor. It occurs most often in girls. It is often clinically misdiagnosed. Surgical treatment involves wide excision. For families who are particularly concerned about the safety of their children during surgery, additional diagnostic procedures may be helpful.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Обоснование</bold>. Кальцифицирующаяся эпителиома Малерба — одна из наиболее распространённых опухолей у детей. Локализуется преимущественно на коже головы и шеи. Опухоль представляет собой бессимптомное, одиночное, шарообразное, медленно растущее подкожное образование плотной консистенции, до 3 см в диаметре. Опытные хирурги иногда удаляют данное новообразование без предварительной диагностики. Мы хотим на представленном случае кальцифицирующейся эпителиомы Малерба у 7-летней девочки посредством ретроспективного анализа её медицинских документов определить, позволит ли только физикальное обследование провести дифференциальную диагностику и поставить правильный диагноз.</p> <p><bold>Описание клинического случая</bold>. Родителями девочки 7 лет было выявлено образование в дистальной части правого плеча. При осмотре врачом поликлиники определялась подкожная опухоль размером до 2 см, голубоватого цвета, пальпаторно ограниченно подвижная, безболезненная. Хирургическое лечение заключалось в широком её иссечении. Гистопатологический анализ подтвердил диагноз КЭМ.</p> <p><bold>Заключение</bold>. КЭМ — редкая опухоль, встречающаяся чаще всего у девочек. Ее часто клинически неправильно диагностируют. Хирургическое лечение подразумевает ее широкое иссечение. Для семей, которые особенно обеспокоены безопасностью своих детей в процессе хирургического вмешательства, может оказаться полезным применение дополнительных диагностических процедур.</p></trans-abstract><kwd-group xml:lang="en"><kwd>calcifying epithelioma of Malherbe</kwd><kwd>surgical treatment</kwd><kwd>clinical case</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>кальцифицирующаяся эпителиома Малерба</kwd><kwd>хирургическое лечение</kwd><kwd>клиническое наблюдение</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Demirdöver C, Sevindik M, Vayvada H, Yilmaz M. Nadir bir lokalizasyonda dev pilomatriksoma: olgu sunumu ve litelatür derlemesi. Türk Plastik Rekonstrüktif ve Estetik Cerrahi Dergisi. 2011;19(1):36–38.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Zhao A, Kedarisetty S, Arriola AG, Isaacson G. Pilomatrixoma and its Imitators. 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