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JRSBRT 6.4, p. 253-261


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Body mass index and response to stereotactic radiosurgery in the treatment of refractory trigeminal neuralgia: A retrospective cohort study
Mohamed H. Khattab, Alexander D. Sherry, Ellen Kim, Joshua Anderson, Guozhen Luo, Hong Yu, Dario J. Englot, Lola B. Chambless, Anthony J. Cmelak and Albert Attia

Stereotactic radiosurgery (SRS) is used as a noninvasive treatment option for patients with trigeminal neuralgia (TN), but the effect of obesity on pain relief post SRS, if any, is unknown. The primary goal of our study was to evaluate the association between obesity and response to SRS in patients with TN. We conducted an IRB-approved retrospective review of patients treated with SRS for TN between 2010 and 2017. Barrow Neurologic Institute (BNI) Score was assigned pre-and post-SRS to quantify pain level. Thirty-two patients (65% female) between the ages of 24 and 96 were studied with a median follow-up time of 11 months. Patients with BMI >25 were significantly less likely to have improvement in their symptoms with SRS (p = 0.005). Elevated BMI may be associated with worsened response to SRS in the treatment of TN.

Keywords: Trigeminal neuralgia, stereotactic radiosurgery, obesity, pain

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