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It has a\u00a0very poor prognosis due to its aggressive nature and frequent distant metastases.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Methods<\/jats:title>\n            <jats:p>In our case report, we present a\u00a017-month-old girl with malignant myopericytoma who was successfully treated using CyberKnife (Accuray; Sunnyvale, CA, USA) stereotactic radiotherapy.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Results<\/jats:title>\n            <jats:p>A\u00a0rare localization of the tumor caused significant challenges during the course of treatment. Radical surgical resection was not achievable due to the tumor\u2019s location in the inner ear; therefore chemotherapy was initially given to the patient. However, due to the fast progression of the tumor during chemotherapy, we decided to use CyberKnife stereotactic radiosurgery (SRS; 5\u00a0fractions of 7\u202fGy) in order to prevent further invasion of the surrounding tissues. During SRS, tumor growth stopped and the tumor then gradually regressed. Since completion of treatment (currently almost 5\u00a0years) our patient has been in complete remission without any significant side effects of the radiation therapy.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Conclusion<\/jats:title>\n            <jats:p>In our recent experience, systemic chemotherapy combined with CyberKnife SRS proved to be effective in a\u00a0patient with a\u00a0rare malignant myopericytoma.<\/jats:p>\n          <\/jats:sec>","DOI":"10.1007\/s00066-025-02413-z","type":"journal-article","created":{"date-parts":[[2025,6,16]],"date-time":"2025-06-16T07:35:39Z","timestamp":1750059339000},"page":"963-970","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["CyberKnife radiation therapy for malignant myopericytoma in a pediatric patient: a\u00a0case report and review of the literature"],"prefix":"10.1007","volume":"201","author":[{"given":"Bence","family":"Bukovszky","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J\u00falia","family":"V\u00edzkeleti","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Levente","family":"J\u00e1nv\u00e1ry","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"G\u00e1bor","family":"Szarvas","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Luca","family":"Felkai","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rita","family":"B\u00e1nusz","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Edit","family":"Varga","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zolt\u00e1n","family":"S\u00e1pi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tibor","family":"Major","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4202-891X","authenticated-orcid":false,"given":"Monika","family":"Cs\u00f3ka","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2025,6,16]]},"reference":[{"issue":"5","key":"2413_CR1","doi-asserted-by":"publisher","first-page":"513","DOI":"10.1097\/00000478-199805000-00001","volume":"22","author":"SR Granter","year":"1998","unstructured":"Granter\u00a0SR, Badizadegan\u00a0K, Fletcher\u00a0CD (1998) Myofibromatosis in adults, glomangiopericytoma, and myopericytoma: a\u00a0spectrum of tumors showing perivascular myoid differentiation. 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All studies mentioned were in accordance with the ethical standards indicated in each case. Consent: Written informed consent was obtained from the patient\u2019s next of kin for publication of this case report and any accompanying images and data. A copy of the written consent was available for review by the editor-in-chief of this journal.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical standards"}}]}}