{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,6]],"date-time":"2026-02-06T05:10:08Z","timestamp":1770354608568,"version":"3.49.0"},"reference-count":28,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"12","license":[{"start":{"date-parts":[[2022,3,21]],"date-time":"2022-03-21T00:00:00Z","timestamp":1647820800000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2022,3,21]]},"abstract":"<jats:sec>\n                    <jats:title>BACKGROUND<\/jats:title>\n                    <jats:p>Intracranial solitary fibrous tumors (ISFTs) are rare mesenchymal tumors originating in the meninges and constitute a heterogeneous group of clinical and biological behavior. Benign histotypes, such as hemangiopericytomas are now considered as a cellular phenotypic variant of this heterogenous group of rare spindle-cell tumors. IFSTs are poorly recognized and remain a diagnostic challenge due to rarity and resemblance to other brain tumors. Previously, IFSTs were thought to pursue a slow, indolent, and nonaggressive course, however, a growing body of literature based on longer follow-up demonstrates an unpredictable clinical course and an uncertain diagnosis.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>OBSERVATIONS<\/jats:title>\n                    <jats:p>A rare case report of malignant transformation of IFST following radiation therapy is reported. In this case a 60-year-old female who underwent gross total resection of the cerebellopontine angle tumor with histopathology consistent with solitary fibrous tumor followed by salvage stereotactic radiosurgery, presented with another recurrence after 2 years of surgery. The authors performed complete removal of the tumor with pathology now consistent with malignant solitary fibrous tumor. A recent follow-up magnetic resonance imaging did not show any recurrence or residual tumor, and the patient reports a generalized well-being.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>LESSONS<\/jats:title>\n                    <jats:p>This report will help to understand the natural history and unusual clinical behavior of these intracranial tumors.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.3171\/case21646","type":"journal-article","created":{"date-parts":[[2022,3,21]],"date-time":"2022-03-21T03:07:41Z","timestamp":1647832061000},"source":"Crossref","is-referenced-by-count":0,"title":["Malignant progression of cerebellopontine angle solitary fibrous tumors following radiation: illustrative case"],"prefix":"10.3171","volume":"3","author":[{"given":"Anna K.","family":"La Dine","sequence":"first","affiliation":[{"name":"Departments of Neurosurgery and"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nida","family":"Fatima","sequence":"additional","affiliation":[{"name":"Departments of Neurosurgery and"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zachary R.","family":"Barnard","sequence":"additional","affiliation":[{"name":"Departments of Neurosurgery and"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"William H.","family":"Slattery","sequence":"additional","affiliation":[{"name":"Neurotology, House Institute, Los Angeles, California"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Gregory P.","family":"Lekovic","sequence":"additional","affiliation":[{"name":"Departments of Neurosurgery and"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1754","reference":[{"issue":"6","key":"b1","series-title":"Histopathology","doi-asserted-by":"publisher","first-page":"515","DOI":"10.1111\/j.1365-2559.1991.tb01499.x","article-title":"Solitary fibrous tumour arising at unusual sites: analysis of a series","volume":"19","author":"Goodlad JR","year":"1991","unstructured":"Goodlad JR, Fletcher CDM. 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