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Clinical Research
Uncorrected Proof. Available online 24 April 2024
Gamma Knife radiosurgery for the treatment of trigeminal neuralgia: A single center experience
Radiocirugía Gamma-Knife para el tratamiento de la neuralgia del trigémino: una experiencia en un solo centro
Mehmet Osman Akcakayaa, Muyassar Mirkhasilovab, Onur Ozturkc,
Corresponding author
onurozturk.ial@gmail.com

Corresponding author.
, Doga Ugurlard, Mehmet Tongee, Gul Alcof, Tulay Ercanf, Sefik Igdemf, Selhan Karaderelera
a Department of Neurosurgery, Gayrettepe Florence Nightingale Hospital, Istanbul, Turkey
b Department of Neurosurgery, Rami Hospital, Istanbul, Turkey
c Department of Neurosurgery, Acibadem Taksim Hospital, Istanbul, Turkey
d Department of Neurosurgery, Samatya Training and Research Hospital, Istanbul, Turkey
e Department of Neurosurgery, Medipol Mega Hospital, Istanbul, Turkey
f Department of Radiation Oncology, Gayrettepe Florence Nightingale Hospital, Istanbul, Turkey
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Figures (2)
Tables (3)
Table 1. Demographics.
Table 2. Previous surgery.
Table 3. Early and final BNI scale.
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Abstract
Introduction and objectives

The aim of this study is to assess the results and outcome of a series of patients with trigeminal neuralgia (TGN) and underwent gamma knife radiosurgery (GKRS).

Materials and methods

Fifty-three patients with symptoms of typical TGN were operated from May 2012 until December 2022. Among these patients, 45 patients were included to the study, who have at least 12 months of follow-up. A mean dose of 87.5 Gy (range 80–90) was delivered to the trigeminal nerve. Postoperatively, outcome was assessed as being excellent when the patient was pain free and medication free.

Results

The mean duration of the symptoms was 9.53 years and the mean age was 59.8 (range 34–85). The mean follow-up period was 46.8 months (range 12–127 months). 46.7% of patients had a history of previous surgical interventions, in 14 patients (31.1%) a single trigeminal division was affected, whereas in the other 31 patients (68.9%) multiple divisions were affected. The rate of initial pain relief was 80%. Hypoesthesia of the trigeminal nerve occurred in 30 (66.7%) of the cases. 20 patients (44.4%) showed excellent results with a mean follow-up period of 72.4 months. Recurrence occurred in 11 patients (24.4%) by a mean time of 27.6 months.

Conclusions

Our results suggest that gamma knife radiosurgery is a safe and efficacious procedure. As such, it is an attractive first- and second-line choice in the treatment of trigeminal neuralgia.

Keywords:
Trigeminal neuralgia
Gamma Knife
Radiosurgery
Outcome
Abbreviations:
BNI Scale
CISS
GKRS
MRI
MS
MVD
PBC
PGR
RF
TGN
Resumen
Introducción y objetivos

El objetivo de este estudio es evaluar los resultados y la evolución de una serie de pacientes con neuralgia del trigémino y sometidos a radiocirugía con gamma-knife (GKRS).

Materiales y Métodos

Cincuenta y tres pacientes con síntomas de neuralgia del trigémino típica fueron operados desde mayo de 2012 hasta diciembre de 2022. De estos pacientes, se incluyeron al estudio 45 pacientes, los cuales tienen al menos 12 meses de seguimiento. Se administró una dosis media de 87,5 Gy (rango 80–90) al nervio trigémino. En el postoperatorio, el resultado se consideró excelente cuando el paciente no tenía dolor ni medicación.

Resultados

La duración media de los síntomas fue de 9,53 años y la edad media fue de 59,8 (rango 34 a 85). El período medio de seguimiento fue de 46,8 meses (rango de 12 a 127 meses). El 46,7% de los pacientes tenía antecedentes de intervenciones quirúrgicas previas, en 14 pacientes (31,1%) se afectó una sola división del trigémino, mientras que en los otros 31 pacientes (68,9%) se afectaron múltiples divisiones. La tasa de alivio del dolor inicial fue del 80%. La hipoestesia del nervio trigémino se produjo en 30 (66,7%) de los casos. 20 pacientes (44,4%) mostraron excelentes resultados con un seguimiento medio de 72,4 meses. La recurrencia se produjo en 11 pacientes (24,4%) en un tiempo medio de 27,6 meses.

Conclusiones

Nuestros resultados sugieren que la radiocirugía con bisturí gamma es un procedimiento seguro y eficaz. Como tal, es una opción atractiva de primera y segunda línea en el tratamiento de la neuralgia del trigémino.

Palabras clave:
Neuralgia del trigémino
Gamma-Knife
Radiocirugía
Resultado

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