M Falip1, L Rodriguez-Bel2, S Castañer3, J Miro1, S Jaraba1, J Mora4, J Bas5, M Carreño6. 1. Epilepsy Unit, Neurology Department, Hospital Universitari de Bellvitge, Hospitalet de Llobregat, Spain. 2. IDI (Image Diagnosis Institute), PET Division, Hospital de Bellvitge, Hospitalet de Llobregat, Spain. 3. IDI (Image Diagnosis Institute), MRI Division, Hospital de Bellvitge, Hospitalet de Llobregat, Spain. 4. Nuclear Medicine, Hospital de Bellvitge, Hospitalet de Llobregat, Spain. 5. Immunology Department, Hospital Universitari de Bellvitge, Hospitalet de Llobregat, Spain. 6. Epilepsy Unit, Neurology Department, Hospital Clinic I Provincial de Barcelona, Barcelona, Spain.
Abstract
BACKGROUND: Musicogenic reflex seizures (MRS) are a rare form of seizures described in patients with temporal lobe epilepsy (TLE), mainly of unknown etiology. Epilepsy with antibodies against glutamic acid decarboxylase (GAD-ab) is a form of autoimmune epilepsy for which no specific semiology has been described. AIM OF THE STUDY: To retrospectively review the incidence of MRS in the general epileptic population and in the series of patients with epilepsy and GAD-ab and to describe its clinical and paraclinical characteristics. METHODS: Patients recorded between January 2010 and January 2016 in the Database of Bellvitge Hospital Epilepsy Unit were reviewed. RESULTS: From a group of 1510 epileptic patients, three reported MRS (0.0019%) (two patients with epilepsy and GAD-ab and one patient with cryptogenic TLE). The incidence of MRS in patients with epilepsy and GAD-ab was 2 of 22 (9%). Both patients had a normal magnetic resonance Imaging (MRI), but FDG-PET showed medial temporal lobe hypometabolism (unilateral or bilateral) in both and also in the insula in one of them. MRS (recorded via video-EEG[electroencephalography] in one patient) arose from the right temporal lobe. CONCLUSIONS: MRS may be a distinctive seizure type in patients with epilepsy and antiGADab. Determination of GAD-ab should be carried out in all cases of MRS, even those with normal structural MRI.
BACKGROUND: Musicogenic reflex seizures (MRS) are a rare form of seizures described in patients with temporal lobe epilepsy (TLE), mainly of unknown etiology. Epilepsy with antibodies against glutamic acid decarboxylase (GAD-ab) is a form of autoimmune epilepsy for which no specific semiology has been described. AIM OF THE STUDY: To retrospectively review the incidence of MRS in the general epileptic population and in the series of patients with epilepsy and GAD-ab and to describe its clinical and paraclinical characteristics. METHODS:Patients recorded between January 2010 and January 2016 in the Database of Bellvitge Hospital Epilepsy Unit were reviewed. RESULTS: From a group of 1510 epilepticpatients, three reported MRS (0.0019%) (two patients with epilepsy and GAD-ab and one patient with cryptogenic TLE). The incidence of MRS in patients with epilepsy and GAD-ab was 2 of 22 (9%). Both patients had a normal magnetic resonance Imaging (MRI), but FDG-PET showed medial temporal lobe hypometabolism (unilateral or bilateral) in both and also in the insula in one of them. MRS (recorded via video-EEG[electroencephalography] in one patient) arose from the right temporal lobe. CONCLUSIONS:MRS may be a distinctive seizure type in patients with epilepsy and antiGADab. Determination of GAD-ab should be carried out in all cases of MRS, even those with normal structural MRI.
Authors: Anna E M Bastiaansen; Hana Mojzisova; Marienke A A M de Bruijn; Agnes van Sonderen; Roland D Thijs; Marian J M Majoie; Rob P W Rouhl; Marleen H van Coevorden-Hameete; Juna M de Vries; Amaia Muñoz Lopetegi; Bob Roozenbeek; Marco W J Schreurs; Peter A E Sillevis Smitt; Maarten J Titulaer Journal: Ann Neurol Date: 2021-01-27 Impact factor: 10.422
Authors: Mercè Falip; Laura Rodriguez-Bel; Sara Castañer; Jacint Sala-Padró; Júlia Miro; Sónia Jaraba; Carlos Casasnovas; Francisco Morandeira; Javier Berdejo; Mar Carreño Journal: Front Neurol Date: 2019-01-09 Impact factor: 4.003