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- W3200515405 abstract "Abstract Purpose In the current era of modern neurosurgery, the treatment strategies have been shifted to “nerve-preservation approaches” for achieving a higher facial and hearing function preservation rate following facial nerve tumors. We have conducted this novel report on determining the outcome of patients with facial nerve schwannomas (FNS) treated with hypo fractionated stereotactic radiosurgery (hfSRS). Methods Retrospective chart review of a prospectively maintained database search was conducted. Patients who underwent hfSRS CyberKnife (Accuray Inc, Sunnyvale, California., USA) for FNS were included. Outcomes consisted of tumor control, facial and hearing nerve function as graded by House-Brackmann (HB) and Gardner-Robertson scale, and adverse radiation effects. SPSS 23 was used to perform statistical analysis. Results With an institutional board review approval, we retrospectively identified 5 patients with FNS [4 intracranial (80%) and 1 extracranial (20%)] treated with hfSRS (2011–2019). Patients received definitive SRS in 3 patients (60.0%) wile adjuvant to surgical resection in 2 patients (40.0%). A median tumor volume of 7.5 cm 3 (range, 1.5–19.6 cm 3 ) received a median prescription dose of 23.2 Gy (range, 21–25 Gy) administered in median of 3 fractions (range, 3–5 session). With a median radiographic follow-up of 31.4 months (range, 13.0–71.0 months) and clinical follow-up of 32.6 months (range, 15.1–72.0 months), the local tumor control was 100.0%. At last clinical follow-up, the facial nerve function improved or remained unchanged HB I-II in 80.0% of the patients, while the hearing nerve function improved or remained stable in 100.0% (Gardner-Robertson I-II) of the patients. Temporary clinical toxicity was seen in 3 patients (60.0%) which resolved. None of the patient developed adverse radiation effect. Conclusion hfSRS in FNS is safe and efficacious in terms of local tumor control, improved facial and hearing nerve function, and very low incidence of complications." @default.
- W3200515405 created "2021-09-27" @default.
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- W3200515405 date "2021-09-16" @default.
- W3200515405 modified "2023-10-16" @default.
- W3200515405 title "Safety and Efficacy of Hypo fractionated Stereotactic Radiosurgery in Facial Nerve Schwannoma." @default.
- W3200515405 doi "https://doi.org/10.21203/rs.3.rs-897884/v1" @default.
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