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- JRSBRT 5.3, p. 183-190
A 10-year experience of linear accelerator-based stereotactic radiosurgery/radiotherapy (SRS/SRT) for paraganglioma: A single institution experience and review of the literature
Michael J. Gigliotti, Shaakir Hasan, Yun Liang, Douglas Chen, Russell Fuhrer and Rodney E. Wegner
Objective: Patients with paragangliomas were treated with LINAC-SRS/SRT in this retrospective review to evaluate tumor control, clinical control, and toxicity.
Methods: 16 patients (median age = 65) with paragangliomas were treated with LINAC-SRS/SRT. Patients were treated to a median dose of 25 Gy in 5 Fx and were evaluated for long-term tumor control, symptom control, and toxicity. Median follow-up was 44 months.
Results: 16 paragangliomas with a median PTV of 11.7 cc were treated as above. All but 2 lesions were controlled at last follow-up, with a 5-year control rate of 88%. Eighty-one percent of patients reported improved or resolved symptoms after treatment. Toxicities included grade 2 vertigo in 1 patient and grade 3 headache from hydrocephalus requiring ventriculoperitoneal shunt.
Discussion: Linear accelerator based SRS/SRT appears to be an effective treatment option for paragangliomas. Recurrences in this cohort occurred 4-5 years after treatment, highlighting the importance of long term follow up.
Keywords: linear accelerator-based fractionated sterotactic radiotherapy (SRT), single fraction (Fx) sterotactic radiosurgery (SRS), paraganglioma, glomous jugulare tumor
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