Stereo-electroencephalography-guided radiofrequency thermocoagulation restricted to periventricular nodular heterotopias in patients with drug-resistant epilepsy: A single center experience. Slegers, R., Wagner, L., van Kuijk, S., Hilkman, D., Hofman, P., van Hoof, R., Jansen, J., van Kranen-Mastenbroek, V., Rijkers, K., Tousseyn, S., Colon, A., Schijns, O., & group , A. C. E. e. s. Seizure, 121:105-113, 2024. Slegers, Rutger Wagner, Louis van Kuijk, Sander Hilkman, Danny Hofman, Paul van Hoof, Raf Jansen, Jacobus van Kranen-Mastenbroek, Vivianne Rijkers, Kim Tousseyn, Simon Colon, Albert Schijns, Olaf eng England 2024/08/16 Seizure. 2024 Aug 8;121:105-113. doi: 10.1016/j.seizure.2024.07.016.
Stereo-electroencephalography-guided radiofrequency thermocoagulation restricted to periventricular nodular heterotopias in patients with drug-resistant epilepsy: A single center experience [link]Paper  doi  abstract   bibtex   
INTRODUCTION: Periventricular nodular heterotopias (PVNH) are developmental abnormalities with neurons abnormally clustered around the cerebral ventricles. Patients frequently present with focal drug-resistant epilepsy (DRE). However, the relationship between PVNH and the seizure onset zone (SOZ) is complex. Stereo-electroencephalography (SEEG) is an invasive diagnostic procedure for patients with DRE. In selected patients, the SEEG may be converted into a therapeutic procedure, lesioning the probable (SOZ) with pulsed radiofrequency thermocoagulation (RFTC). The aim of our study was to evaluate the efficacy and safety of SEEG-RFTC in a series of DRE patients with PVNH. METHODS: Twenty-four patients with focal DRE related to PVNH and treated with SEEG-guided-RFTC restricted to nodules were prospectively collected between 2016 and 2023 and retrospectively analyzed after a follow-up of at least 12 months. RESULTS: Seventeen patients (71 %) responded (ILAE class 1-4) after SEEG-guided RFTC of whom eleven (46 %) became seizure-free (class 1) at last follow up, nine (45 %) despite residual PVNH tissue on MRI. SEEG seizure onset was restricted to PVNH in eleven patients (class 1 in 45 %) and simultaneously in PVNH and other cortical areas in thirteen patients (class 1 in 46 %). Out of 31 SEEG-RFTC procedures in twenty-four patients, adverse events, related to RFTC, were recorded in eight (26 %), of which two patients (8 %) had predicted permanent visual complaints whilst the other five had transient complaints. SIGNIFICANCE: This study demonstrates that a considerable percentage of patients, even with bilateral, multiple PVNH and involvement of adjacent cortical regions can be rendered seizure-free with SEEG-guided-RFTC restricted to the nodules. Furthermore, this study delivers evidence that the complete destruction of the entire nodule is not necessary to render a patient seizure free. This justifies the use of SEEG in patients with single, multiple or bilateral PVNHs to provide insight into the epileptogenic organization in and around these lesions.
@article{RN364,
   author = {Slegers, R. and Wagner, L. and van Kuijk, S. and Hilkman, D. and Hofman, P. and van Hoof, R. and Jansen, J. and van Kranen-Mastenbroek, V. and Rijkers, K. and Tousseyn, S. and Colon, A. and Schijns, O. and group, A. C. E. epilepsy surgery},
   title = {Stereo-electroencephalography-guided radiofrequency thermocoagulation restricted to periventricular nodular heterotopias in patients with drug-resistant epilepsy: A single center experience},
   journal = {Seizure},
   volume = {121},
   pages = {105-113},
   note = {Slegers, Rutger
Wagner, Louis
van Kuijk, Sander
Hilkman, Danny
Hofman, Paul
van Hoof, Raf
Jansen, Jacobus
van Kranen-Mastenbroek, Vivianne
Rijkers, Kim
Tousseyn, Simon
Colon, Albert
Schijns, Olaf
eng
England
2024/08/16
Seizure. 2024 Aug 8;121:105-113. doi: 10.1016/j.seizure.2024.07.016.},
   abstract = {INTRODUCTION: Periventricular nodular heterotopias (PVNH) are developmental abnormalities with neurons abnormally clustered around the cerebral ventricles. Patients frequently present with focal drug-resistant epilepsy (DRE). However, the relationship between PVNH and the seizure onset zone (SOZ) is complex. Stereo-electroencephalography (SEEG) is an invasive diagnostic procedure for patients with DRE. In selected patients, the SEEG may be converted into a therapeutic procedure, lesioning the probable (SOZ) with pulsed radiofrequency thermocoagulation (RFTC). The aim of our study was to evaluate the efficacy and safety of SEEG-RFTC in a series of DRE patients with PVNH. METHODS: Twenty-four patients with focal DRE related to PVNH and treated with SEEG-guided-RFTC restricted to nodules were prospectively collected between 2016 and 2023 and retrospectively analyzed after a follow-up of at least 12 months. RESULTS: Seventeen patients (71 %) responded (ILAE class 1-4) after SEEG-guided RFTC of whom eleven (46 %) became seizure-free (class 1) at last follow up, nine (45 %) despite residual PVNH tissue on MRI. SEEG seizure onset was restricted to PVNH in eleven patients (class 1 in 45 %) and simultaneously in PVNH and other cortical areas in thirteen patients (class 1 in 46 %). Out of 31 SEEG-RFTC procedures in twenty-four patients, adverse events, related to RFTC, were recorded in eight (26 %), of which two patients (8 %) had predicted permanent visual complaints whilst the other five had transient complaints. SIGNIFICANCE: This study demonstrates that a considerable percentage of patients, even with bilateral, multiple PVNH and involvement of adjacent cortical regions can be rendered seizure-free with SEEG-guided-RFTC restricted to the nodules. Furthermore, this study delivers evidence that the complete destruction of the entire nodule is not necessary to render a patient seizure free. This justifies the use of SEEG in patients with single, multiple or bilateral PVNHs to provide insight into the epileptogenic organization in and around these lesions.},
   keywords = {Epilepsy surgery
Safety outcome
Seizure outcome
Stereotactic surgery},
   ISSN = {1532-2688 (Electronic)
1059-1311 (Linking)},
   DOI = {10.1016/j.seizure.2024.07.016},
   url = {https://www.ncbi.nlm.nih.gov/pubmed/39146706},
   year = {2024},
   type = {Journal Article}
}

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