Long-term outcomes of Gamma Knife radiosurgery for classic trigeminal neuralgia: implications of treatment and critical review of the literature

2010 ◽  
Vol 2010 ◽  
pp. 232-234
Author(s):  
P.A. House
Keyword(s):  
Trigeminal Neuralgia ◽  
Gamma Knife ◽  
Critical Review ◽  
Gamma Knife Radiosurgery ◽  
Review Of The Literature ◽  
Long Term Outcomes

Long-Term Outcomes in the Treatment of Classical Trigeminal Neuralgia by Gamma Knife Radiosurgery

Neurosurgery ◽  
2016 ◽  
Vol 79 (6) ◽  
pp. 879-888 ◽  
Author(s):  
Nuria E. Martínez Moreno ◽  
Jorge Gutiérrez-Sárraga ◽  
Germán Rey-Portolés ◽  
Adolfo Jiménez-Huete ◽  
Roberto Martínez Álvarez
Keyword(s):  
Trigeminal Neuralgia ◽  
Gamma Knife ◽  
Gamma Knife Radiosurgery ◽  
Response Rates ◽  
Complete Response ◽  
Long Term Outcomes ◽  
Classical Trigeminal Neuralgia ◽  
Facial Numbness

Abstract BACKGROUND: Gamma knife radiosurgery (GKRS) is one of the alternatives for treatment for classical trigeminal neuralgia (TN). OBJECTIVE: To retrospectively analyze long-term outcomes for TN using GKRS achieved at our institution. METHODS: One hundred seventeen patients with medically refractory TN treated by GKRS at our institution were followed up between 1993 and 2011. Mean maximum dose was 86.5 Gy (range: 80-90 Gy; median: 90 Gy). Clinical response was defined based on the Burchiel classification. We considered classes I and II as a complete response. For toxicity, we use the Barrow Neurological Institute facial numbness scale. Mean duration of follow-up was 66 months (range: 24-171 months). RESULTS: Complete response at last follow-up in our patients was 81%, with an excellent response while off medication in 52%. Pain-free rates without medication (class I) were 85% at 3 years (confidence interval [CI]: 78%-94%), 81% at 5 years (CI: 72%-91%), and 76% at 7 years (CI: 65%-90%). Complete response rates (classes I-II) were 91% at 3 years (CI: 86%-97%), 86% at 5 years (CI: 79%-93%), and 82% at 7 years (CI: 72%-93%). Poor treatment response rates differed significantly between patients who had undergone previous surgery and were refractory to management with medication prior to GKRS. New or worsening facial numbness was reported in 32.5% (30% score II and 2.5% score III). No anesthesia dolorosa was reported. Permanent recurrence pain rate was 12%. CONCLUSION: GKRS achieved favorable outcomes compared with surgery in terms of pain relief and complication rates in our cohort of patients, notwithstanding decreasing pain-free survival rates over time. We consider GKRS to be an initial treatment in the management of medically intractable TN in selected patients.

Long-term Outcomes for Trigeminal Neuralgia after Gamma Knife Radiosurgery

Neurosurgery ◽  
2006 ◽  
Vol 59 (2) ◽  
pp. 471
Author(s):  
Ron I. Riesenburger ◽  
Vasilios A. Zerris ◽  
Kevin C. Yao
Keyword(s):  
Trigeminal Neuralgia ◽  
Gamma Knife ◽  
Gamma Knife Radiosurgery ◽  
Long Term Outcomes

Long-term Outcomes of Patients Treated With Gamma-knife Radiosurgery for Trigeminal Neuralgia

2012 ◽  
Vol 84 (3) ◽  
pp. S624-S625
Author(s):  
J.C. Rosenberg ◽  
R. Ruthazer ◽  
J.E. Mignano ◽  
R.I. Riesenburger ◽  
J.K. Wu ◽  
...  
Keyword(s):  
Trigeminal Neuralgia ◽  
Gamma Knife ◽  
Gamma Knife Radiosurgery ◽  
Long Term Outcomes

scholarly journals Long Term Outcomes of Gamma Knife Radiosurgery for Typical Trigeminal Neuralgia-Minimum 5-Year Follow-Up

2012 ◽  
Vol 51 (5) ◽  
pp. 276 ◽  
Author(s):  
Jong Kwon Lee ◽  
Hyuk Jai Choi ◽  
Hak Cheol Ko ◽  
Seok Keun Choi ◽  
Young Jin Lim
Keyword(s):  
Trigeminal Neuralgia ◽  
Gamma Knife ◽  
Gamma Knife Radiosurgery ◽  
Long Term Outcomes

Temporal disconnection between pain relief and trigeminal nerve microstructural changes after Gamma Knife radiosurgery for trigeminal neuralgia

2020 ◽  
Vol 133 (3) ◽  
pp. 727-735
Author(s):  
Peter Shih-Ping Hung ◽  
Sarasa Tohyama ◽  
Jia Y. Zhang ◽  
Mojgan Hodaie
Keyword(s):  
Pain Relief ◽  
Trigeminal Neuralgia ◽  
Pain Intensity ◽  
Gamma Knife ◽  
Trigeminal Nerve ◽  
Diffusion Tensor ◽  
Gamma Knife Radiosurgery ◽  
Time Points ◽  
Microstructural Effect

OBJECTIVEGamma Knife radiosurgery (GKRS) is a noninvasive surgical treatment option for patients with medically refractive classic trigeminal neuralgia (TN). The long-term microstructural consequences of radiosurgery and their association with pain relief remain unclear. To better understand this topic, the authors used diffusion tensor imaging (DTI) to characterize the effects of GKRS on trigeminal nerve microstructure over multiple posttreatment time points.METHODSNinety-two sets of 3-T anatomical and diffusion-weighted MR images from 55 patients with TN treated by GKRS were divided within 6-, 12-, and 24-month posttreatment time points into responder and nonresponder subgroups (≥ 75% and < 75% reduction in posttreatment pain intensity, respectively). Within each subgroup, posttreatment pain intensity was then assessed against pretreatment levels and followed by DTI metric analyses, contrasting treated and contralateral control nerves to identify specific biomarkers of successful pain relief.RESULTSGKRS resulted in successful pain relief that was accompanied by asynchronous reductions in fractional anisotropy (FA), which maximized 24 months after treatment. While GKRS responders demonstrated significantly reduced FA within the radiosurgery target 12 and 24 months posttreatment (p < 0.05 and p < 0.01, respectively), nonresponders had statistically indistinguishable DTI metrics between nerve types at each time point.CONCLUSIONSUltimately, this study serves as the first step toward an improved understanding of the long-term microstructural effect of radiosurgery on TN. Given that FA reductions remained specific to responders and were absent in nonresponders up to 24 months posttreatment, FA changes have the potential of serving as temporally consistent biomarkers of optimal pain relief following radiosurgical treatment for classic TN.

Outcome Predictors After Gamma Knife Radiosurgery for Recurrent Trigeminal Neuralgia

Neurosurgery ◽  
2010 ◽  
Vol 67 (6) ◽  
pp. 1637-1645 ◽  
Author(s):  
Hideyuki Kano ◽  
Douglas Kondziolka ◽  
Huai-Che Yang ◽  
Oscar Zorro ◽  
Javier Lobato-Polo ◽  
...  
Keyword(s):  
Pain Relief ◽  
Trigeminal Neuralgia ◽  
Gamma Knife ◽  
Pain Control ◽  
Surgical Procedure ◽  
Gamma Knife Radiosurgery ◽  
Sensory Loss ◽  
Failed Surgery ◽  
Gamma Knife Stereotactic Radiosurgery

Abstract BACKGROUND: Trigeminal neuralgia (TN) that recurs after surgery can be difficult to manage. OBJECTIVE: To define management outcomes in patients who underwent gamma knife stereotactic radiosurgery (GKSR) after failing 1 or more previous surgical procedures. METHODS: We retrospectively reviewed outcomes after GKSR in 193 patients with TN after failed surgery. The median patient age was 70 years (range, 26-93 years). Seventy-five patients had a single operation (microvascular decompression, n = 40; glycerol rhizotomy, n = 24; radiofrequency rhizotomy, n = 11). One hundred eighteen patients underwent multiple operations before GKSR. Patients were evaluated up to 14 years after GKSR. RESULTS: After GKSR, 85% of patients achieved pain relief or improvement (Barrow Neurological Institute grade I-IIIb). Pain recurrence was observed in 73 of 168 patients 6 to 144 months after GKSR (median, 6 years). Factors associated with better long-term pain relief included no relief from the surgical procedure preceding GKSR, pain in a single branch, typical TN, and a single previous failed surgical procedure. Eighteen patients (9.3%) developed new or increased trigeminal sensory dysfunction, and 1 developed deafferentation pain. Patients who developed sensory loss after GKSR had better long-term pain control (Barrow Neurological Institute grade I-IIIb: 86% at 5 years). CONCLUSION: GKSR proved to be safe and moderately effective in the management of TN that recurs after surgery. Development of sensory loss may predict better long-term pain control. The best candidates for GKSR were patients with recurrence after a single failed previous operation and those with typical TN in a single trigeminal nerve distribution.

Long term efficacy and patient satisfaction of microvascular decompression and gamma knife radiosurgery for trigeminal neuralgia

2015 ◽  
Vol 22 (5) ◽  
pp. 818-822 ◽  
Author(s):  
Anil Nanda ◽  
Vijayakumar Javalkar ◽  
Shihao Zhang ◽  
Osama Ahmed
Keyword(s):  
Patient Satisfaction ◽  
Trigeminal Neuralgia ◽  
Gamma Knife ◽  
Microvascular Decompression ◽  
Gamma Knife Radiosurgery ◽  
Term Efficacy

Long-term Outcomes After Gamma Knife Radiosurgery for Meningiomas

2016 ◽  
Vol 39 (5) ◽  
pp. 453-457 ◽  
Author(s):  
Douglas Kondziolka ◽  
Agam D. Patel ◽  
Hideyuki Kano ◽  
John C. Flickinger ◽  
L. Dade Lunsford
Keyword(s):  
Gamma Knife ◽  
Gamma Knife Radiosurgery ◽  
Long Term Outcomes
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