Stereo-Electroencephalography-guided Radiofrequency Thermocoagulation Restricted to Periventricular nodular Heterotopias in Patients with Drug-resistant Epilepsy: A Single Center Experience

Periventricular nodular heterotopias (PVNH; formerly known as subependymal heterotopia), categorized as congenital malformations due to aberrant neuronal migration from the periventricular germinal matrix to the superficial neocortex, are characterized by nodules of gray matter located near the ventricles [1,2]. PVNH can occur in conjugation with other cortical malformations, emphasizing the complexity of this condition [1,3].

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