The effect of the coronavirus vaccinations on seizures in patients with epilepsy.

Purpose: Information on COVID-19 vaccine tolerance and complications in patients with epilepsy is not yet sufficient to provide a recommendation for vaccination guidelines. The aim of this study was to investigate the effect of two types of COVID vaccines currently used in Turkey (mRNA vaccine from Pfizer/BioNTech and inactivated vaccine from Sinovac) on epileptic seizures. Methods: We included 318 patients with epilepsy who were admitted to our epilepsy outpatient clinic. Clinical characteristics such as age, gender, age at seizure onset and the duration of epilepsy were noted. Types and the numbers of the anti-seizure drugs were recorded. Patients were evaluated either by face-to-face or by teleconference interviews. The seizure frequency in the first thirty days after any dose of vaccination was questioned. Results: A total of 318 patients (149 females, 46.8%) with a confirmed diagnosis of epilepsy were enrolled in the study. An increase in seizure frequency was reported after the COVID-19 vaccine in 19 patients. Of these 19 patients, 2 were vaccinated with Sinovac, while 17 were vaccinated with BioNTech/Pfizer mRNA vaccine. There was no significant relationship between age, age at seizure onset, duration of epilepsy, type of seizures, seizure frequency or seizure induction. Status epilepticus was not reported in any of the participants. Conclusion: Physicians need strong scientific evidence to advocate the importance of vaccine for COVID-19, that's why accumulation of knowledge related to this issue is important not only from medical but also from medico-legal point of interest. We aimed to contribute the current literature with our study to strengthen the physicians' hand while recommending COVID vaccines to PWE. Our results show that there is no significant increase in the risk of triggering seizures with COVID-19 vaccines. These data show that vaccination against COVID-19 with both vaccine types in patients with epilepsy is safe and well tolerated.

Outcome of Epilepsy Surgery in MRI-Negative Patients Without Histopathologic Abnormalities in the Resected Tissue.

BACKGROUND AND OBJECTIVE: Patients with presumed nonlesional focal epilepsy-based on either MRI or histopathologic findings-have a lower success rate of epilepsy surgery compared with lesional patients. In this study, we aimed to characterize a large group of patients with focal epilepsy who underwent epilepsy surgery despite a normal MRI and had no lesion on histopathology. Determinants of their postoperative seizure outcomes were further studied. METHODS: We designed an observational multicenter cohort study of MRI-negative and histopathology-negative patients who were derived from the European Epilepsy Brain Bank and underwent epilepsy surgery between 2000 and 2012 in 34 epilepsy surgery centers within Europe. We collected data on clinical characteristics, presurgical assessment, including genetic testing, surgery characteristics, postoperative outcome, and treatment regimen. RESULTS: Of the 217 included patients, 40% were seizure-free (Engel I) 2 years after surgery and one-third of patients remained seizure-free after 5 years. Temporal lobe surgery (adjusted odds ratio [AOR]: 2.62; 95% CI 1.19-5.76), shorter epilepsy duration (AOR for duration: 0.94; 95% CI 0.89-0.99), and completely normal histopathologic findings-versus nonspecific reactive gliosis-(AOR: 4.69; 95% CI 1.79-11.27) were significantly associated with favorable seizure outcome at 2 years after surgery. Of patients who underwent invasive monitoring, only 35% reached seizure freedom at 2 years. Patients with parietal lobe resections had lowest seizure freedom rates (12.5%). Among temporal lobe surgery patients, there was a trend toward favorable outcome if hippocampectomy was part of the resection strategy (OR: 2.94; 95% CI 0.98-8.80). Genetic testing was only sporadically performed. DISCUSSION: This study shows that seizure freedom can be reached in 40% of nonlesional patients with both normal MRI and histopathology findings. In particular, nonlesional temporal lobe epilepsy should be regarded as a relatively favorable group, with almost half of patients achieving seizure freedom at 2 years after surgery-even more if the hippocampus is resected-compared with only 1 in 5 nonlesional patients who underwent extratemporal surgery. Patients with an electroclinically identified focus, who are nonlesional, will be a promising group for advanced molecular-genetic analysis of brain tissue specimens to identify new brain somatic epilepsy genes or epilepsy-associated molecular pathways.

Rasmussen's syndrome treated with anakinra.

BACKGROUND AND OBJECTIVE: Rasmussen's encephalitis (RE) is a rare chronic neurological disorder, characterized by unilateral inflammation of the cerebral cortex, refractory focal epilepsy or epilepsia partialis continua, hemiparesis, and progressive cognitive decline. Interleukin-1 (IL-1) plays an important role in neuroinflammation as a key element in the activation of the inflammatory IL-1ß-IL-1 receptor type 1 (IL-1R1) axis. Anakinra, an IL-1 inhibitor, is successfully used in patients with new onset refractory status epilepticus and febrile infection-related epilepsy syndrome. METHODS AND RESULTS: We present 38-year-old male with RE having right-sided hemiparesis and continuous spasms being unresponsive to immune modulatory therapies like pulse steroid, intravenous immunoglobulin and anti-seizure drugs. After treatment with anakinra for three weeks, the continuous spasms almost completely subsided, and his muscle strength returned to normal. DISCUSSION: Anakinra may be considered as a treatment option in patients with RE and refractory seizures.

Determinants of felt-stigma in adolescents with epilepsy: Is it the same story?

PURPOSE: The present study aimed to investigate previously researched variables in adult people with epilepsy (PWE), which include felt stigma, perceived overprotection, concealment of epilepsy, and epilepsy-related concerns for adolescents with epilepsy (AWE). Another goal was to determine the reported levels of these variables and explore the relationships among them, as well as their associations with demographic and clinical factors. Additionally, we also investigated whether clinical and demographic variables create significant changes in these variables. Lastly, we aimed to determine the variables that predict felt-stigma in AWE. METHODS: On hundred and nineteen AWE aged between 10 and 18 were included in the study by using convenience sampling. Participants received the scales and demographic information form either in face to face meeting or via a Zoom session. RESULTS: Nearly half of the participants stated high level of felt stigma, perceived overprotection and concealment of epilepsy, while more than half reported concerns about their future/occupational prospects. Also, felt stigma had significant relations with concealment of epilepsy and concerns related to epilepsy. Early adolescents were under more risk for perceived overprotection, while late adolescents had higher concerns related to future/occupation. Females reported more felt stigma. Finally, felt stigma was predicted by concealment, concerns related to future/occupation, and concerns related to social life. CONCLUSION: The variables that explain the felt-stigma in AWE appear to be quite similar to those in adult PWE.

Birth outcomes in pregnant women with epilepsy: A Nationwide multicenter study from Türkiye.

OBJECTIVE: The present study was aimed at investigating the effects of anti-seizure medications (ASMs), patient demographic characteristics, and the seizure type and frequency on the development of congenital malformations (CMs) in the infants of pregnant women with epilepsy (PWWE). METHODS: PWWE followed up at the neurology outpatient clinic of 21 centers between 2014 and 2019 were included in this prospective study. The follow-up of PWWE was conducted using structured, general pregnant follow-up forms prepared by the Pregnancy and Epilepsy Study Committee. The newborns were examined by a neonatologist after delivery and at 1 and 3 months postpartum. RESULTS: Of the infants of 759 PWWE, 7.2% had CMs, with 5.6% having major CMs. Polytherapy, monotherapy, and no medications were received by 168 (22.1%), 548 (72.2 %), and 43 (5.7 %) patients, respectively. CMs were detected at an incidence of 2.3% in infants of PWWE who did not receive medication, 5.7% in infants of PWWE who received monotherapy, and 13.7% in infants of PWWE who received polytherapy. The risk of malformation was 2.31-fold (95% confidence interval (CI): 1.48-4.61, p < .001) higher in infants of PWWE who received polytherapy. Levetiracetam was the most frequently used seizure medication as monotherapy, with the highest incidence of CMs occurring with valproic acid (VPA) use (8.5%) and the lowest with lamotrigine use (2.1%). The incidence of CMs was 5% at a carbamazepine dose <700 mg, 10% at a carbamazepine dose ≥700 mg, 5.5% at a VPA dose <750 mg, and 14.8% at a VPA dose ≥750 mg. Thus the risk of malformation increased 2.33 times (p = .041) in infants of PWWE receiving high-dose ASMs. SIGNIFICANCE: Birth outcomes of PWWE receiving and not receiving ASMs were evaluated. The risk of CMs occurrence was higher, particularly in infants of PWWE using VPA and receiving polytherapy. The incidence of CMs was found to be lower in infants of PWWE receiving lamotrigine.

Outcome Predictors of Lesional Posterior Cortex Epilepsy Surgery.

BACKGROUND: Lesional posterior cortex epilepsy (PCE) is often drug resistant and may benefit from surgical intervention. In this study, we aimed to identify potential predictive factors associated with seizure recurrence after epilepsy surgery in lesional PCE. METHODS: We retrospectively reviewed patients with PCE who underwent surgery between 1998 and 2021. They were divided into 2 groups according to seizure outcome; the seizure-free group (group 1) and the non-seizure-free group (group 2). The relationship among clinical factors, electroencephalography (EEG) or cranial magnetic resonance imaging findings, disease, and seizure outcome was investigated. RESULTS: A total of 60 patients, with a mean age of 27.26 ± 12.35 years (range, 9-61 years), were included in the study. There were 31 patients (51.66%) in group 1 (Engel class I) and 29 patients (48.33%) in group 2 (13 [21.66%], 10 [16.66%], and 6 [10%] patients in Engel class II, III, and IV, respectively), with a mean follow-up of 8.95 ± 6.96 years (range, 1-24 years). No difference was observed regarding age, gender, age at seizure onset, operation type, treatment gap, and presence of bilateral lesions between the groups (P > 0.05). However, bilateral findings on interictal EEG and gliosis as the underlying disease were predictors of seizure recurrence (P < 0.05). CONCLUSIONS: More than half of the patients (including 2 with bilateral magnetic resonance imaging lesions) were seizure free at long-term follow-up. However, patients with bilateral findings on interictal EEG and gliosis were more likely to have recurrent seizures after surgery. Because lesional PCE is almost always drug resistant and has a potential for favorable outcomes, epilepsy surgery should be considered early.

The effects of cognitive, physical, and somatosensory rehabilitation after right temporo-parietal tumor resection on cognitive, motor, somatosensory, and electrophysiological parameters: A case report.

INTRODUCTION: This report examines the effects of a multimodal rehabilitation program which includes cognitive, physical, and somatosensory rehabilitation after right temporo-parietal tumor resection on cognitive, motor, somatosensory, and electrophysiological parameters. CASE DESCRIPTION: A 22-year-old patient presented with sensory loss in the dominant left hand and reduced writing ability after right temporo-parietal lobe resection. Cognitive, motor, and sensory evaluations were carried out pre and post-treatment. The patient's spontaneous electroencephalo-gram (EEG) and an EEG during application of transcutaneous electrical nerve stimulation (TENS) (TENS EEG) were recorded. As a reference for the patient's electrophysiological values, EEGs of 4 healthy individuals were also taken. Over a period of 1 year, the patient received multimodal rehabilitation which includes cognitive, physical, and somato-sensory rehabilitation on 2 days each week. OUTCOMES: An improvement of the patient's cognitive capacities, motor strength, superficial, deep and cortical sensations was achieved. After rehabilitation, an increase in parietal and occipital alpha activity as well as in frontal and parietal beta activity was seen both in spontaneous EEG and in TENS EEG. With increasing TENS intensity, alpha and beta power increased as well. CONCLUSION: Our findings suggest that a multimodal rehabilitation program may improve cognitive, sensory, and motor effects after resection due to tumor surgery.

The Thalamic and Intracortical Inhibitory Function of Somatosensory System Is Unchanged in Mesial Temporal Lobe Epilepsy With Hippocampal Sclerosis.

PURPOSE: In mesial temporal lobe epilepsy with hippocampal sclerosis, there is parietal atrophy and cognitive involvement in related domains. In this context, we hypothesized that inhibitory input into somatosensory cortex and thalamus may be increased in these patients, which could improve after epilepsy surgery. Thus, we analyzed the inhibitory function of somatosensory system by studying surround inhibition (SI) and recovery function of somatosensory evoked potentials in patients with mesial temporal lobe epilepsy with hippocampal sclerosis. METHODS: Nine patients with unoperated mesial temporal lobe epilepsy with hippocampal sclerosis, 10 patients who underwent epilepsy surgery, and 12 healthy subjects were included. For SI of somatosensory evoked potentials, we recorded somatosensory evoked potentials after stimulating median or ulnar nerve at wrist separately and after median and ulnar nerves simultaneously and calculated SI% in all participants. For recovery function of somatosensory evoked potentials, paired stimulation of median nerve at 40- and 100-millisecond intervals was performed. We compared the findings among groups. As a secondary analysis, we determined the outliers in the patient group and analyzed the relation to the clinical findings. RESULTS: The mean SI% or recovery function was similar among three groups. However, there were five patients with SI loss on normal side in the patient group, which was related to the antiseizure drugs. CONCLUSIONS: In contrast to our hypothesis, both intracortical (SI) and thalamic/striatal (recovery function) inhibitory modulation of the somatosensory cortex was not altered in mesial temporal lobe epilepsy with hippocampal sclerosis and did not differ in surgical and nonsurgical groups.

Individualised prediction of drug resistance and seizure recurrence after medication withdrawal in people with juvenile myoclonic epilepsy: A systematic review and individual participant data meta-analysis.

Background: A third of people with juvenile myoclonic epilepsy (JME) are drug-resistant. Three-quarters have a seizure relapse when attempting to withdraw anti-seizure medication (ASM) after achieving seizure-freedom. It is currently impossible to predict who is likely to become drug-resistant and safely withdraw treatment. We aimed to identify predictors of drug resistance and seizure recurrence to allow for individualised prediction of treatment outcomes in people with JME. Methods: We performed an individual participant data (IPD) meta-analysis based on a systematic search in EMBASE and PubMed - last updated on March 11, 2021 - including prospective and retrospective observational studies reporting on treatment outcomes of people diagnosed with JME and available seizure outcome data after a minimum one-year follow-up. We invited authors to share standardised IPD to identify predictors of drug resistance using multivariable logistic regression. We excluded pseudo-resistant individuals. A subset who attempted to withdraw ASM was included in a multivariable proportional hazards analysis on seizure recurrence after ASM withdrawal. The study was registered at the Open Science Framework (OSF; https://osf.io/b9zjc/). Findings: Our search yielded 1641 articles; 53 were eligible, of which the authors of 24 studies agreed to collaborate by sharing IPD. Using data from 2518 people with JME, we found nine independent predictors of drug resistance: three seizure types, psychiatric comorbidities, catamenial epilepsy, epileptiform focality, ethnicity, history of CAE, family history of epilepsy, status epilepticus, and febrile seizures. Internal-external cross-validation of our multivariable model showed an area under the receiver operating characteristic curve of 0·70 (95%CI 0·68-0·72). Recurrence of seizures after ASM withdrawal (n = 368) was predicted by an earlier age at the start of withdrawal, shorter seizure-free interval and more currently used ASMs, resulting in an average internal-external cross-validation concordance-statistic of 0·70 (95%CI 0·68-0·73). Interpretation: We were able to predict and validate clinically relevant personalised treatment outcomes for people with JME. Individualised predictions are accessible as nomograms and web-based tools. Funding: MING fonds.

The analysis of 18 F-FDG PET/MRI, electroencephalography, and semiology in patients with gray matter heterotopia: A pilot study.

OBJECTIVES: To describe 18 F-fluorodeoxyglucose positron emission tomography/magnetic resonance imaging (18 F-FDG PET/MRI) along with semiology and electroencephalography (EEG) in patients with gray matter heterotopia (GMH); to evaluate the concordance between 18 F-FDG PET/MRI and clinical epileptogenic zone (EZ). MATERIALS & METHODS: GMH (subcortical heterotopia [SCH] and periventricular nodular heterotopia [PNH]) patients with epilepsy who underwent 18 F-FDG PET/MRI were retrospectively enrolled. Two radiologists evaluated brain MRI, while two nuclear medicine specialists assessed the 18 F-FDG PET. The SUVmax values of visually hypometabolic cortical areas were compared to the contralateral cortex using a SUVmax threshold value of 10%; the SUVmax values of GMH lesions were compared with that of the right precentral gyrus. The cortex or GMH with hypometabolism on 18 F-FDG PET/MRI was considered representative of the EZ. The clinical EZ was identified using EEG and semiology. RESULTS: Thirty patients (19 PNH; 11 SCH) with a mean age of 28.46 ± 9.52 years were enrolled. The heterotopic nodules were ametabolic in 3 patients (10%), hypometabolic in 16 (33.33%), isometabolic in 13 (26.66%), and hypermetabolic in 4 (10%). 18 F-FDG PET/MRI demonstrated hypometabolism in the cortex and GMH in 22/30 (73.33%) and 16/30 (53.33%). We could identify a clinical EZ in 18 patients, and 15 out of 18 (83.33%) had concordant 18 F-FDG PET/MRI findings. CONCLUSION: Heterotopic nodules in GMH patients show different metabolic patterns on 18 F-FDG PET/MRI, with nearly three-quarters of the patients having cortical hypometabolism. 18 F-FDG PET/ MRI findings are mostly concordant with the clinical EZ.

Seizure treatment with olfactory training: a preliminary trial.

OBJECTIVE: Epilepsy is a chronic condition characterized by recurrent seizures. Despite miscellaneous antiseizure medications, resistance to treatment is still approximately 30%. This resistance brings forward the multidisciplinary approach and complementary treatments. In this study, we aimed to investigate the effect of olfactory training on epileptic seizures with special aromas having antiseizure effects in patients diagnosed with drug-resistant epilepsy. METHODS: A total of 24 patients (14 pediatric and 10 adults) with drug-resistant epilepsy were recruited for the study. Participants were asked to inhale the standardized bottle filled with lavender aroma (Lavandula Angustifolia) twice a day (morning and evening) for 30-45 s (2 cm in front of nose; 10-15 s to right and left nostril and 10-15 s to both nostrils) for 3 months. The type, frequency, duration of seizures, the quality of life (SF-36 and PedsQL 4.0), and olfactory functions (Sniffin' Sticks Test and Pediatric Smell Wheel) were re-assessed. RESULTS: Statistical analysis showed that olfactory training decreased the seizure frequency (p < 0.001) and the seizure duration (p = 0.02). A global 50% seizure reduction was seen among patients. Moreover, olfactory training increased the quality of life (p = 0.003) and improved the olfactory function in both the pediatric and adult groups (p = 0.017, p = 0.05, respectively). There was no adverse reaction and no increase in seizure frequency. SIGNIFICANCE: The observations of the present investigation suggest that olfactory training is a successful complementary therapy with no adverse reaction in patients with drug-resistant epilepsy. Large cohort studies and longer follow-up periods are needed for providing olfactory training as a therapy modality in patients with epilepsy.

Treatment of COVID-19-induced refractory status epilepticus by tocilizumab.

BACKGROUND AND PURPOSE: COVID-19 is a novel infectious disease caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in which neurological complications have been increasingly recognized. Acute symptomatic epileptic seizures and status epilepticus are frequently reported neurological complications associated with this infection. The nervous system damage caused by SARS-CoV-2 may be mediated by the immune system. Interleukin 6 (IL-6), an important component of the cytokine storm, is directly correlated with the severity of symptoms. Tocilizumab is an inhibitor of IL-6 receptors, which blocks IL-6-mediated signal transduction and is used in the treatment of COVID-19 and status epilepticus. CASE REPORT: A patient with the Unverricht-Lundborg disease is presented who had developed refractory recurrent status epilepticus during COVID-19 infection, which was finally controlled by treatment with tocilizumab. DISCUSSION: Tocilizumab, an IL-6 inhibitor, may be considered as a treatment option in patients with status epilepticus and refractory seizures.

Analysis of neurology consultations in hospitalized patients with COVID-19.

OBJECTIVE: The aim of this study was to evaluate patients who were hospitalized with a diagnosis of COVID-19 and were consulted by neurology during their hospital stay. METHODS: All files of patients with COVID-19 who were admitted to Cerrahpasa Medical Faculty Hospital between March 11th and December 31st, 2020 were retrospectively reviewed, and files of patients who consulted by neurology during their stay were included. Demographic and clinical characteristics, neurologic diagnosis, outcome and related laboratory data were extracted from electronic medical records and analyzed. Patients were categorized into the first wave and second wave according to the date of hospitalization. RESULTS: A total of 2257 patients were hospitalized for COVID-19; among them, 127 were consulted by a neurologist during their hospital stay. Fifteen patients received a consultation for possible drug interactions. Among the remaining 112 patients, the reason for neurology consultation was i. exacerbation of a neurological comorbidity vs ii. new-onset neurological manifestations. The median age was 68.5 ± 14.2 years, and 60.7% were men. Dementia and stroke were the leading neurological comorbidities. COVID-19 disease was more severe in the patients with the new-onset neurological comorbidity than in patients with exacerbation of a neurological comorbidity (p = 0.07). Serum creatinine kinase levels were higher in the new-onset patient group (p < 0.05). Exacerbation of previous neurological disease or new neurological impairment were jointly and severely related to high mortality (overall 35/112 vs 275/2145, p < 0.001; exacerbation 12/45 vs 275/2145 p < 0.01; new-onset 23/67 vs 275/2145, p < 0.001). CONCLUSION: Serious neurological involvement is relatively uncommon in hospitalized patients with COVID-19 and is associated with increased mortality.

The memory assessment clinics scale for epilepsy (MAC-E): A brief measure of subjective cognitive complaints in epilepsy.

Objective: The aim of this study was to conduct item reduction of the Memory Assessment Clinics Self-Rating Scale (MAC-S) to create a briefer measure that can be used to quickly evaluate subjective memory complaints in patients with epilepsy. Method: A total of 1333 adults with focal epilepsy completed the original 49-item MAC-S. The sample was randomly split into three subsamples, and a series of analyses (i.e. exploratory factor analysis, confirmatory factor analysis, and item response theory analyses) was conducted to identify an alternative factor structure, with a reduced number of items. A panel of 5 neuropsychologists independently reviewed the final model to assess appropriateness of each individual item as well as the factor loadings and overall factor structure. Final factor titles were subsequently decided as a group. Results: Five factors were identified: Attention, Working Memory, Retrieval, Semantic Memory, and Episodic Memory. The length of the MAC-S was reduced from 49 to 30 items, with items being removed because they failed to load onto any of the factors substantially, or because of poor item discrimination or threshold levels. Conclusions: The Memory Assessment Clinics Scale for Epilepsy (MAC-E), is an updated, brief measure of subjective memory functioning that can be used to efficiently assess relevant, every-day memory abilities in patients with epilepsy within both clinical and research settings.

Vagus Nerve Stimulation in Intractable Epilepsy.

AIM: To investigate and compare the efficacy and safety of vagus nerve stimulation (VNS) therapy in different types of epilepsy. MATERIAL AND METHODS: Patients, who were implanted with VNS between the years 2005 and 2020, were retrospectively included in the study. Age, gender, age at seizure onset, epilepsy types, VNS implantation year, replacement year, pre and post-VNS seizure frequency, number of responders, number of antiseizure medication and adverse events were recorded. RESULTS: In total, 41 patients were included in the study. The number of patients with focal epilepsy was 21 (51.2%). 10 patients (24.4%) had generalized epilepsy and 10 patients (24.4%) had ?combined generalized and focal epilepsy? (Lennox-Gastaut, Dravet syndrome). The Pre-VNS median seizure frequency was 1.5/day in the focal group, 0.6/day in the generalized group and 6/day in the combined group. Seizure frequencies dropped to 0.3/day in the focal group, 0.2/day in the generalized group and 3.0/day in the combined group at the 12th month after VNS (p < 0.001, p=0.004, p < 0.001). The response rate was found to be 68.3% at the 12th month after VNS. The number of antiseizure medications was decreased from 3.6/day to 3.1/day at the 12th months after VNS (p < 0.001). Two patients? (4.9%) VNS therapy was discontinued due to adverse events. CONCLUSION: The study indicates that VNS therapy is safe and effective in focal, generalized and combined epilepsy types. Despite having a low seizure freedom rate, VNS is a good alternative treatment option for patients who for any reason are not candidates for resective surgery.

Factors Affecting Seizure Outcomes After Surgery for Cavernoma Related Epilepsy.

AIM: To present one of the largest retrospective cavernoma related epilepsy (CRE) studies which include divergent supratentorial locations operated and followed up at least 2 years. We also investigated the factors affecting the seizure outcome. MATERIAL AND METHODS: This study includes a total of 56 patients with drug-responsive (n=40) and drug-resistant (n=16) CRE who underwent resective surgery. Age at seizure onset, age at surgery, gender, duration of epilepsy, seizure frequencies/type before and after treatment, EEG and brain MRI findings, prescribed AEDs, preoperative and post-operative neurological status, histopathological diagnosis, post-operative seizure outcomes and surgical information were documented. RESULTS: The average follow-up period was 69.6 months (range 24-216 months). The seizure outcome was assessed according to Engel?s classification at the last follow-up. Engel class I was achieved in 53 patients (95%); there was one patient at class II and two patients at class III. All patients in the drug-responsive group were at Engel class I after the surgery, while all patients at Engel classes II and III were in the drug-resistant patient group. This clearly shows that there were better outcomes in DRP group (p < 0.01). Neither the locations of cavernomas nor the duration of epilepsy had any impact on seizure outcome (p > 0.05). CONCLUSION: An earlier surgical intervention may prevent the patients from becoming drug-resistant such that their chances of being seizure free after surgery increase.