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DIA and DIG are rare, infantile, supratentorial neoplasms that usually occur in children before 2years of age and are exceedingly rare in older age groups. They appear as hypodense, cystic masseswith solid components showing dural attachment on neuroimaging. They are characterized byreticulin-rich spindle cell stroma containing connective tissue due to meningeal involvement,microscopically. These tumors have potential for misdiagnosis because they contain varyingproportions of neoplastic glial, neuronal and poorly differentiated cells, which causes them to have a“small round blue cell tumor” like appearance, though they have a good prognosis if correctlydiagnosed. The current study report two cases diagnosed at our institution that had very latepresentation with varying complaints which challenged the normally believed dictum of these tumorsbeing entirely infantile.

Background Primary meningeal melanomatosis is a rare leptomeningeal tumor, and the diagnosis is challenging due to nonspecific clinical symptoms and radiologic findings. Case Description A 21-year-old man presented with recurrent seizure and impaired memory. Cranial magnetic resonance imaging showed obvious brain atrophy with bilateral extensive meningeal enhancement in the supratentorial region. Diffusion-weighted imaging and fluid-attenuated inversion recovery showed slightly hyperintensive signals in the cortex. Microscopic examination revealed invasion of pigment into the Virchow-Robin space and cortex. Immunohistochemical examination of biopsy samples showed that cells were immunopositive for HMB45 and S-100 and immunonegative for melan-A with a Ki-67–positive percentage of 3%. No obvious atypia or nuclear mitosis was observed. Pathohistologic results of biopsied meninges confirmed the diagnosis of diffuse meningeal melanomatosis. The disease was aggravated with the occurrence of brain atrophy, recurrent seizure, and declined higher cortical function. Conclusions This case report illustrates that brain atrophy in meningeal melanomatosis is associated with a progressive decline of higher cortical function.

Previously undiagnosed obstructive sleep apnea (OSA) is a known contributor to negative postoperative outcomes. The STOP-Bang questionnaire is a screening tool for OSA that has been validated in both medical and surgical populations. The authors have previously studied this screening tool in a brain tumor population at 30 days. The present study seeks to investigate the effectiveness of this questionnaire, for predicting 90-day readmissions in a population of brain tumor patients with previously undiagnosed OSA.Included for analysis were all patients undergoing craniotomy for supratentorial neoplasm at a multihospital, single academic medical center. Data were collected from supratentorial craniotomy cases for which the patient was alive at 90 days after surgery (n = 238). Simple logistic regression analyses were used to assess the ability of the STOP-Bang questionnaire and subsequent single variables to accurately predict patient outcomes at 90 days.The sample included 238 brain tumor admissions, of which 50% were female (n = 119). The average STOP-Bang score was 1.95 ± 1.24 (range 0-7). A 1-unit higher increase in STOP-Bang score accurately predicted 90-day readmissions (odds ratio [OR] = 1.65, P = 0.001), 30- to 90-day emergency department visits (OR = 1.85, P 0.001), and 30- to 90-day reoperation (OR = 2.32, P 0.001) with fair accuracy as confirmed by the receiver operating characteristic (C-statistic = 0.65-0.76). However, the STOP-Bang questionnaire did not correlate with home discharge (P = 0.315).The results of this study suggest that undiagnosed OSA, as evaluated by the STOP-Bang questionnaire, is an effective predictor of readmission risk and health system utilization in a brain tumor craniotomy population with previously undiagnosed OSA.

Background: Intracranial tumors are the most common pediatric solid tumors. Only one-third of these tumors arise from the supratentorial compartment. The abnormal intracranial tumors are unusual but can bleed to an extent causing hemorrhagic shock necessitating blood transfusion in the perioperative period. The perioperative management of these subset of patients poses a unique challenge to both the neurosurgeons and the neuroanesthetic team. Materials and Methods: This study included a case series of 30 patients with giant supratentorial neoplasms who underwent craniotomy and tumor resection from 2014 to 2017 in our Tertiary Care Institute. The clinical data were collected from the patient’s records obtained from the Department of Neurosurgery, National Institute of Mental Health and Neurosciences (NIMHANS), Bangalore, Karnataka, India. The aim of this case series was to characterize the perioperative challenges, management strategies, course, and outcome in 30 children who were operated for elective or emergency resection of giant supratentorial lesions in our hospital. We also reviewed the literature available to guide the anesthetic management of pediatric patients with intracranial tumors. Results: Among the 30 patients, four had significant intraoperative fluid shifts necessitating massive blood transfusion perioperatively. The overall incidence of mortality in our study cohort was 16.67% (5/30). Conclusion: The maintenance of systemic physiological homeostasis by anticipation of complications, vigilant monitoring, and prompt resuscitation is critical to foster favorable outcomes in unison with optimal and safe surgical extirpation of the primary cerebral lesion.

Despite research indicating that patients with non-English primary language (NEPL) have increased hospital length of stay (LOS) for craniotomies, there is a paucity of neurosurgical research examining the impact of language on short-term outcomes. This study sought to evaluate short-term outcomes for patients with English primary language (EPL) and NEPL admitted for resection of a supratentorial tumor.Using the Agency for Healthcare Research and Quality Healthcare Cost and Utilization Project New Jersey State Inpatient Database, this study included patients 18-90 years old who underwent resection of a supratentorial primary brain tumor, meningioma, or brain metastasis from 2009 to 2017. The primary outcomes were total, preoperative, and postoperative LOS. Secondary outcomes were complications, mortality, and discharge disposition. Univariable and multivariable analyses compared Spanish primary language (SPL), non-English non-Spanish (NENS) primary language, and EPL groups.A total of 7324 patients were included: 2962 with primary brain tumor, 2091 with meningioma, and 2271 with brain metastasis. Patients with SPL (n = 297) were younger and more likely to have noncommercial insurance, lower income, and fewer comorbidities. Patients with NENS (n = 257) had similar age and comorbidities to the EPL group but had a greater proportion of noncommercially insured and low-income patients (P0.001). Multivariable analysis showed that patients with NENS had increased postoperative LOS (adjusted incidence rate ratio, 1.10; P = 0.008) and higher odds of a complication (adjusted odds ratio, 1.36; P = 0.015), and patients with SPL had higher odds of being discharged home (adjusted odds ratio, 1.55; P = 0.017).Patients with NEPL have different short-term outcomes after supratentorial tumor resection that varies based on primary language. More research is needed to understand the mechanisms driving these findings and to clarify unique experiences for different populations with NEPL.

Objective: The LACE + index (Length of stay, Acuity of admission, Charlson Comorbidity Index (CCI) score, and Emergency department visits in the past 6 months) is a tool utilized to predict 30–90 day readmission and other secondary outcomes. We sought to examine the effectiveness of this predictive tool in patients undergoing brain tumor surgery. Patients and methods: Admissions and readmissions for patients undergoing craniotomy for supratentorial neoplasm at a single, multi-hospital, academic medical center, were analyzed. Key data was prospectively collected with the Neurosurgery Quality Improvement Initiative (NQII)-EpiLog tool. This included all supratentorial craniotomy cases for which the patient was alive at 90 days after surgery (n = 238). Simple logistic regression analyses were used to assess the ability of the LACE + index and subsequent single variables to accurately predict the outcome measures of 30–90 day readmission, 30–90 day emergency department (ED) visit, and 30–90 day reoperation. Analysis of the model’s or variable’s discrimination was determined by the receiver operating characteristic curve as represented by the C-statistic. Results: The sample included admissions for craniotomy for supratentorial neoplasm (n = 238) from 227 patients, of which 50.00% were female (n = 119). The average LACE + index score was 53.48 ± 16.69 (Range 9–83). The LACE + index did not accurately predict 30–90 day readmissions (P = 0.127), 30–90 day ED visits (P = 0.308), nor reoperations (P = 0.644). ROC confirmed that the LACE + index was little better than random chance at predicting these events in this population (C-statistic = 0.51−0.58). However, a single unit increase in LACE + leads to a 0.97 times reduction in the odds of being discharged home with fair predictive accuracy (P Conclusion: The results of this study show that the LACE + index is ill-equipped to predict 30–90 day readmissions in the brain tumor population and further analysis of significant covariates or other prediction tools should be undertaken.

Ependymoma with YAP1-MAMLD1 fusion is a rare, recently described supratentorial neoplasm of childhood, with few cases published so far. We report on 15 pediatric patients with ependymomas carrying YAP1-MAMLD1 fusions, with their characteristic histopathology, immunophenotype and molecular/cytogenetic, radiological and clinical features. The YAP1-MAMLD1 fusion was documented by RT-PCR/Sanger sequencing, and tumor genomes were studied by molecular inversion probe (MIP) analysis. Significant copy number alterations were identified by GISTIC (Genomic Identification of Significant Targets in Cancer) analysis. All cases showed similar histopathological features including areas of high cellularity, presence of perivascular pseudo-rosettes, small to medium-sized nuclei with characteristic granular chromatin and strikingly abundant cells with dot-like cytoplasmic expression of epithelial membrane antigen. Eleven cases presented features of anaplasia, corresponding to WHO grade III. MRI showed large supratentorial multinodular tumors with cystic components, heterogeneous contrast enhancement, located in the ventricular or periventricular region. One of two variants of YAP1-MAMLD1 fusions was detected in all cases. The MIP genome profiles showed balanced profiles, with focal alterations of the YAP1 locus at 11q22.1-11q21.2 (7/14), MAMLD1 locus (Xp28) (10/14) and losses of chromosome arm 22q (5/14). Most patients were female (13/15) and younger than 3 years at diagnosis (12/15; median age, 8.2 months). Apart from one patient who died during surgery, all patients are alive without evidence of disease progression after receiving different treatment protocols, three without postoperative further treatment (median follow-up, 4.84 years). In this to date, largest series of ependymomas with YAP1-MAMLD1 fusions we show that they harbor characteristic histopathological, cytogenetic and imaging features, occur mostly in young girls under 3 years and are associated with good outcome. Therefore, this genetically defined neoplasm should be considered a distinct disease entity. The diagnosis should be confirmed by demonstration of the specific fusion. Further studies on large collaborative series are warranted to confirm our findings.

Background and importance Data supporting the use of electrocorticography (ECoG) monitoring during electrical stimulation in awake craniotomies for resection of supratentorial neoplasms is robust, but its applicability during active resection is often limited by the inability to keep the array in place. Given the known survival benefit of gross total resection in glioma surgery, novel approaches to surgical monitoring are warranted to maximize safe resection and optimize surgical outcomes in patients with glioblastoma. Clinical presentation A 68-yr-old right-handed woman presented to the emergency department with confusion. Imaging studies revealed a bifrontal intra-axial brain lesion. She underwent a left-sided awake craniotomy procedure with cortical and subcortical mapping. During surgical resection, multiple electrographic seizures were detected on continuous ECoG monitoring with a customized 22-channel high-density hollow circular array. She remained without clinical evidence of seizures at 3 mo after surgery. Conclusion We report a unique case of serial electrographic seizures detected during continuous intraoperative ECoG monitoring during active surgical resection of a glioblastoma using a novel circular hollow array during an awake craniotomy. The use of continuous ECoG monitoring during active resection may provide additional data, with potential influence in outcomes for patients undergoing resection of high-grade glial neoplasms.

Leptomeningeal metastatic disease (LMD) occurs in 30–50% of newly diagnosed and recurrent pediatric malignant cerebellar tumors and 20–45% of malignant supratentorial tumors. Radiation and chemotherapy often cause substantial long-term neurotoxicity and outcomes remain poor for patients with LMD. At recurrence, LMD is generally minimally responsive to conventional therapies. Immunovirotherapy with engineered oncolytic HSV-1 G207 has emerged as a promising treatment for children with high-grade brain tumors. G207 infects and kills tumor cells while sparing normal cells and stimulates a robust anti-tumor immune response. Intratumoral G207 inoculation demonstrated safety and preliminary efficacy in a pediatric Phase 1 trial in recurrent/progressive high-grade glioma (NCT02457845), and a Phase 2 trial (NCT04482933) is forthcoming. Additionally, a Phase 1 trial of intratumoral G207 in recurrent/progressive malignant pediatric cerebellar tumors is ongoing (NCT03911388). While intratumoral inoculation delivers G207 directly to a primary tumor, it requires neurosurgical procedures thereby limiting repeat doses. Thus, we sought to establish the safety and efficacy of intraventricular G207. Utilizing an immunocompetent, HSV-sensitive murine strain, we determined that a standard 1x107 plaque-forming units (PFU) dose of G207 resulted in damage to the ependymal lining. However, interferon induction with an intraventricular low-dose (1x104 PFU) of G207 or polyinosinic-polycytidylic acid (poly I:C), a toll-like receptor 3 agonist, three days prior to standard treatment dose protected the ependymal lining. This approach enabled safe delivery of multiple subsequent doses. Importantly, with these protective measures, G207 significantly prolonged survival in pediatric patient-derived xenograft models and an immunocompetent murine LMD model of group 3 medulloblastoma, the most aggressive and fatal subtype. Collectively, these data indicate that toxicity from intraventricular G207 can be safely mitigated prior to a therapeutic dose, and that intraventricular G207 effectively targets group 3 medulloblastoma including LMD. These findings provide support for clinical translation of intraventricular G207.

Background Admitting patients to an intensive care or medium care unit (ICU/MCU) after adult supratentorial tumor craniotomy remains common practice even though some studies have suggested lower level care is sufficient for selected patients. We have introduced a "no ICU, unless" policy for tumor craniotomy patients. Objective To provide a quieter postoperative environment for patients, reduce the burden on the ICU department, and to evaluate whether costs can be reduced. Methods A cohort study was performed comparing patients that underwent tumor craniotomy for supratentorial tumors during 1 yr after introduction (n = 109) of the new policy with the year before (n = 107). Rate of complications was evaluated, as was the length of stay and patient satisfaction using qualitative evaluation. Finally, costs were evaluated comparing the situation before and after implementation of the new protocol. Results A reduction in ICU/MCU admittance from 64% to 24% of patients was found resulting in 13.3% cost reduction (€1950 per case), without increasing the length of stay at the ward. The length of stay in the hospital was similar. Complications were significantly reduced after implementing the new policy (0.98 vs 0.53 per patient, P = .003). Patients that were interviewed after the new policy reported feeling safe and at ease at the ward. Conclusion Changing our policy from "ICU, unless" to "no ICU, unless" reduced complication rates and length of stay in the hospital while keeping patients satisfied. Hospital costs related to the admission have been significantly reduced by the new policy.

BACKGROUND: Neurofibromatosis type 1 (NF1) has been identified as a predisposing factor in the development of pilocytic astrocytoma (PA), a common benign central nervous system tumor. Although this is a common association, simultaneous development of multiple lesions is an infrequent finding, especially in nonoptic and hypothalamic locations. CASE DESCRIPTION: A 41-year-old female patient with NF1 and uncontrolled human immunodeficiency virus (HIV) type 1 infection presented with a first generalized seizure and associated headache and ataxia. Imaging studies revealed 2 large intra-axial PAs, nodular-cystic in the supratentorial compartment and solid in the infratentorial compartment. Both lesions were treated by gross total resection in 2 surgeries performed 1 week apart. Despite their different imaging patterns, the tumors were histologically and genetically identical. CONCLUSIONS: We present a unique case involving 2 histologically and genetically identical PAs occurring simultaneously in supratentorial and infratentorial locations. We suggest that an intrinsic predisposition to tumor development in patients with NF1 might have been enhanced by the HIV-related immunosuppression in this case. Strict oncologic surveillance is essential in patients with a tumor predisposition syndrome combined with immunosuppression. info:eu-repo/semantics/publishedVersion

In the United Kingdom widespread adoption of day-case image-guided biopsy (DIB) for brain tumour has yet to develop. We review a decade of experience of DIB for suspected supra-tentorial brain tumour and recommend discharge criteria for patients post-operatively. 30-day complications, post-operative admissions into hospital and patient satisfaction are examined. METHODS Published protocols and procedures for DIB of brain tumours were used. Tissue samples were sent for fixed histological preparation without intraoperative neuropathological assessment. All patients undergoing an image-guided biopsy for tumour were retrospectively identified from operative logbooks (01/10/2006–30/09/2016), and information recorded from online records. Patients completed satisfaction questionnaires. RESULTS 706 image-guided biopsies for supratentorial tumour were performed of which approximately 60% were identified pre-operatively as candidates for DIB. 92% of DIB patients were successfully discharged 6 hours postoperatively. 4.5% of DIB patients were admitted directly from the day-case unit following identification of a postoperative haematoma >2 cm diameter on CT head performed at 4 hours. 3/401 DIB patients (< 1%) required surgical evacuation for the haematoma, all made a full recovery, with no delay to commencing their oncological management. A diagnostic accuracy of 98% was achieved. Overall 90% of patients were satisfied about the timing of their discharge from hospital and 92.5 % felt they had enough medical support following discharge. DISCUSSION Conscious sedation with enhanced recovery techniques, lack of intra-operative neuropathological analysis and a stream lined service with robust communication between patients, carers/families and the oncology allied medical professionals has ensured that DIB for diagnosis of tumour is safe, reliable and feasible for most patients and is not associated with increased morbidity or mortality. The procedure is well tolerated with good patient satisfaction. We recommend that patients with a good pre-operative functional baseline, requiring a supra-tentorial biopsy are offered day-case surgery in a dedicated unit specialising in this procedure.

Background Pediatric cerebral ganglioneuroblastoma is an exceedingly rare tumor. Case Description We describe the case of a 4-year-old boy with sudden mental status decline who was found to have a large intracranial lesion with intraventricular extension. Conclusion Management of the case and pathologic findings are discussed, along with a review of the literature on this rare entity.

Ependymoma is the third most common pediatric primary brain tumor. Ependymomas are categorized according to their locations and genetic abnormalities, and these two parameters are important prognostic factors for patient outcome. For supratentorial (ST) ependymomas, RELA fusion-positive ependymomas show a more aggressive behavior than YAP1 fusion-positive ependymomas. Extracranial metastases of intra-axial neuroepithelial tumors are extremely rare. In this paper, we report a case of aggressive anaplastic ependymoma arising in the right frontoparietal lobe, which had genetically 1q25 gain, CDKN2A homozygous deletion, and L1CAM overexpression. The patient was a 10-year-old boy who underwent four times of tumor removal and seven times of gamma knife surgery. Metastatic loci were scalp and temporalis muscle overlying primary operation site, lung, liver, buttock, bone, and mediastinal lymph nodes. He had the malignancy for 10 years and died. This tumor is a representative case of RELA fusion-positive ST ependymoma, showing aggressive behavior.

Background Neuronavigation systems are used widely in the localization of intracranial lesions with satisfactory accuracy. However, they are expensive and difficult to learn. Therefore, a simple and practical augmented reality (AR) system using mobile devices might be an alternative technique. Objective We introduce a mobile AR system for the localization of supratentorial lesions. Its practicability and accuracy were examined by clinical application in patients and comparison with a standard neuronavigation system. Methods A 3-dimensional (3D) model including lesions was created with 3D Slicer. A 2-dimensional image of this 3D model was obtained and overlapped on the patient's head with the Sina app. Registration was conducted with the assistance of anatomical landmarks and fiducial markers. The center of lesion projected on scalp was identified with our mobile AR system and standard neuronavigation system, respectively. The difference in distance between the centers identified by these 2 systems was measured. Results Our mobile AR system was simple and accurate in the localization of supratentorial lesions with a mean distance difference of 4.4 ± 1.1 mm. Registration added on an average of 141.7 ± 39 seconds to operation time. There was no statistically significant difference for the required time among 3 registrations ( P = 0.646). Conclusions The mobile AR system presents an alternative technology for image-guided neurosurgery and proves to be practical and reliable. The technique contributes to optimal presurgical planning for supratentorial lesions, especially in the absence of a neuronavigation system.

We investigated the functional status of adult supratentorial superficial low-grade glioma (ASS-LGG) after surgery and analyzed its relevant factors to guide the therapeutic strategy and improve the life quality of these patients. Clinical materials from January 2008 to December 2010 in 104 adults with ASS-LGG were analyzed retrospectively. The follow-up period ranged from 6 months to 1.5 years. The logistic regression was used to evaluate the preoperative and postoperative variation of functional status in patients to disclose the relevant factors affecting postoperative functional status, such as age, gender, the duration of symptom, size and location of the tumor, hemisphere, resection degree, and tumor pathologic grade and preoperative Karnofsky performance status (Pre-KPS). Four out of nine candidate factors are related to the postoperative functional status. They are age less than 40 years, the size of tumor less than 5 cm in diameter, tumor located in the right hemisphere, and limited resection of tumor in the eloquent area. It seems more meaningful to evaluate the functional status of the patients with ASS-LGG on the basis of these clinical features, involving age, tumor size, location, and extent of resection.

Purpose Intensive multi-modal regimens have improved survival for patients with atypical teratoid rhabdoid tumor, however relapse rates remain high. A better understanding of clinical and pathologic features associated with tumor relapse is critical to risk-stratifying patients. Patients and Methods ACNS0333 treatment consisted of multi-agent chemotherapy, high-dose chemotherapy, and radiation therapy, lasting approximately 6 months. Variables including patient age, sex, tumor location, M-stage, degree of resection, order of therapy, germline status, and molecular subgroup were analyzed. Cumulative incidence (CI) of event free survival due to relapse was evaluated for each variable. Results Thirty-three of 65 evaluable patients had tumor relapse. For the entire cohort, the CI of relapse was 21.8% at 6 months, 40.6% at one year and 50.3% at 4 years. For patients with infratentorial tumors, CI of relapse was 26.3%, 34.2% and 37.2%, at 6 months, 1 and 4 years respectfully compared to 15.3%, 49.9%, and 69.7% for those with supratentorial tumors (p 0.051). Patients with SHH subtype had no relapses in the first 6 months and CI of relapse of 37.5% at 4 years, while those with TYR and MYC subgroups had CI of relapse of 33.3% and 26.7% at 6 months and 46.3% and 73.3% at 4 years respectfully (p 0.088). Patients with germline mutations had a cumulative incidence of relapse of 20% at 6 months and 60% at 12 months compared to 22.6% and 37.7% respectfully for those without. No obvious trends were noted based on other analyzed variables. Conclusions ACNS0333 was not powered to determine prognostic indicators of relapse, however, this data suggest interesting trends based on tumor location, subtype and germline status. Infratentorial location and SHH subtype maybe associated with lower risk of relapse. Larger data sets must be compiled to further investigate these variables, perform multivariate analyses and inform risk-stratification on future trials.

The Stupp protocol of post-resection external beam radiation therapy and concomitant temozolomide is the standard of care for patients with newly-diagnosed glioblastoma, with expanded use in anaplastic astrocytoma. However, the optimal interval between surgery and these adjuvant therapies, and its impact on survival, is unknown. To investigate this, de-identified claims from a large, private health insurance database were queried to identify adult patients who underwent index craniotomy for resection of a supratentorial neoplasm during the period 2005-2014 and began postoperative radiation and temozolomide within 13 weeks of surgery. A total of 2535 patients were assigned to groups based on interval from surgery to first radiation treatment of up to 4 weeks, 4-6 weeks, or 6-13 weeks. Of these, 1098 patients began radiation treatment within 4 weeks of craniotomy, 1019 between 4 and 6 weeks, and 418 between 6 and 13 weeks. There was significant regional variation in treatment schedule in the United States. Survival was calculated based on time from first craniotomy to death. Kaplan-Meier plot and multivariate Cox proportional hazard regression demonstrated a statistically significant association between earliest postoperative radiation and decreased survival (hazard ratio 1.31), along with older age and male sex. Earlier initiation of postoperative radiation for high-grade glioma is not associated with increased survival. Rather, beginning radiation treatment within 4 weeks of craniotomy was associated with significantly worse survival compared to initiation of treatment 4-13 weeks after craniotomy. This is the largest population-based study to date regarding timing of Stupp protocol initiation.

Intraoperative electrophysiology is increasingly used for various lesion resections, both in adult and pediatric brain surgery. Subcortical mapping is often used in adult surgery when lesions lie in proximity to the corticospinal tract (CST). We describe a novel technique of continuous subcortical mapping using an electrified Cavitron UltraSonic Aspirator (CUSA) in children with supratentorial lesions.We evaluated the method of subcortical mapping using a CUSA as a stimulation probe. Included in this study were children (18 years of age) with supratentorial lesions in proximity to the CST in which the CUSA stimulator was applied. Data were collected retrospectively.Eleven children were included. Lesions were located in the thalamus (3), basal-ganglia (2), lateral ventricle (1), and convexity (5). Lesions included low-grade gliomas (6), arteriovenous malformation (1), cavernoma (1), cortical dysplasia (1), ependymoma grade II (1), and high-grade glioma (1). Seven patients had positive mapping responses to CUSA-based stimulation at various stimulation intensities. These responses led to a more limited resection in 5 cases. There were no complications related to the mapping technique.Continuous CUSA-based subcortical stimulation is a feasible mapping technique for assessing proximity to the CST during resection of supratentorial lesions in children. Future studies should be performed to better correlate the current threshold for eliciting a motor response with the distance from the CST, as well as the effect of age on this technique.

Enterogenous cysts (ECs) are endodermal lesions resulting from splitting anomalies in the neuroenteric canal. We report the case of a 64-year-old patient who presented with a sudden headache followed by collapse. Brain computed tomography revealed a hyperdense lesion in the anterior part of the third ventricle with obstructive hydrocephalus. A presumptive diagnosis of colloid cyst was made and he underwent a right transcortical approach for lesion resection. The histopathological examination revealed an EC. ECs are common lesions in the cervical-thoracic spine but rare in the supratentorial compartment with only two previously described cases occurring in the third ventricle.

Recent progress in neuro-oncology has validated the significance of genetic diagnosis in gliomas. We previously investigated IDH1/2 and TP53 mutations via Sanger sequencing for adult supratentorial gliomas and reported that PCR-based sequence analysis classified gliomas into three genetic subgroups that have a strong association with patient prognosis: IDH mutant gliomas without TP53 mutations, IDH and TP53 mutant gliomas, and IDH wild-type gliomas. Furthermore, this analysis had a strong association with patient prognosis. To predict genetic subgroups prior to initial surgery, we retrospectively investigated preoperative radiological data using CT and MRI, including MR spectroscopy (MRS), and evaluated positive 5-aminolevulinic acid (5-ALA) fluorescence as an intraoperative factor. We subsequently compared these factors to differentiate each genetic subgroup. Multiple factors such as age at diagnosis, tumor location, gadolinium enhancement, 5-ALA fluorescence, and several tumor metabolites according to MRS, such as myo-inositol (myo-inositol/total choline) or lipid20, were statistically significant factors for differentiating IDH mutant and wild-type, suggesting that these two subtypes have totally distinct characteristics. In contrast, only calcification, laterality, and lipid13 (lipid13/total Choline) were statistically significant parameters for differentiating TP53 wild-type and mutant in IDH mutant gliomas. In this study, we detected several pre- and intraoperative factors that enabled us to predict genetic subgroups for adult supratentorial gliomas and clarified that lipid13 quantified by MRS is the key tumor metabolite that differentiates TP53 wild-type and mutant in IDH mutant gliomas. These results suggested that each genetic subtype in gliomas selects the distinct lipid synthesis pathways in the process of tumorigenesis.

Purpose of review The article reviews the recent evidence on the anesthetic management of patients undergoing craniotomy for supratentorial tumor resection. Recent findings A rapid recovery of neurological function after craniotomy for supratentorial tumor allows for the prompt diagnosis of intracranial complications and possibly an early hospital discharge. Intraoperative esmolol infusion was shown to reduce the anesthetic requirements, and may facilitate a more rapid recovery of neurological function. Outpatient craniotomy for supratentorial tumor resection has been associated with several clinical and economic benefits, but has not gained widespread use because of skepticism and medical-legal concerns. Awake craniotomy is associated with advantageous outcomes compared with surgery under general anesthesia, and is regarded as the standard of care for tumors that reside in or in close proximity to the eloquent brain. Recent studies have demonstrated that intraoperative electroacupuncture, dexmedetomidine, pregabalin, and lidocaine may facilitate postcraniotomy pain management. The use of volatile anesthetic agents in cancer surgery is associated with a worse survival compared with intravenous anesthetics, possibly by hindering immunologic defenses against cancer cells. Summary Recent evidence has yielded valuable information regarding anesthetic management of patients undergoing supratentorial tumor craniotomy. Despite a plethora of studies that compare short-term outcomes using different anesthetic and analgesic regimens, randomized controlled trials that examine the long-term outcomes (i.e., neurocognitive function, quality of life, tumor recurrence, and survival) that are of particular interest to patients are needed.

Gangliocytoma of the sellar region are extremely rare and often coexist with pituitary adenoma. Aim of this review is to collect all the cases reported in literature and to summarize the most recent literature evidences on the subject. A systematic review was performed through PubMed searching for articles describing gangliocytoma of the sellar region in the adult population, up to September 2015. An analysis of epidemiological data, clinical presentation, histochemical and radiological features and follow-up data was performed. A total of 55 articles were included in our analysis, reporting 129 cases of gangliocytoma of the sellar region. One case identified in our institution was also included. 85% of cases presented in association with pituitary adenomas. A female prevalence was evident. Patients presented most frequently with symptoms of hyperprolactinemia (44%) or visual disturbances (47%) when the sellar gangliocytoma was isolated, or with acromegalic manifestations (67%) when the gangliocytoma was associated with a pituitary adenoma. Immunohistochemistry showed a higher prevalence of mixed GH-PRL adenomas in association with sellar gangliocytomas, followed by GH adenomas. A purely intrasellar localization was found in about 25% of cases and a suprasellar extension in 30% of cases. A more extensive infiltration was present in about 40% of cases. A complete resection was obtained in 56% of collision lesions. The follow-up period was variable but endocrine remission was reported in 81% of cases of associated gangliocytoma and pituitary adenoma. Sellar gangliocytomas are rare lesions and an association with pituitary adenomas should always be searched. Mixed GH PRL adenomas are most frequently isolated. Collision lesions seem to have a behavior similar to isolated adenoma but a more important aggressiveness should be excluded at a molecular level. Further studies will allow advancements in clarifying the pathogenesis of this association.

INTRODUCTION In the previous WHO classification of central nervous tumors, the supratentorial tumors comprise small round blue cells with aggressive clinical features had been defined as primitive neuroectodermal tumor (PNET). Recent molecular analysis revealed that they do not belong to a single entity, but they are re-classified as the tumors of other well-defined tumors and newly defined tumor species. These facts were reflected to the new classifications. While, there are few studies those showed the re-consideration of treatments for tumors diagnosed as so-called PNET. In this study, we propose the optimization of treatments for tumors diagnosed by the new classification to clarify which treatments were effective for the tumors those were diagnosed as PNET. MATERIALS AND METHODS The tumor samples diagnosed as so-called PNETs were analyzed. The molecular information was extracted from tumor specimens. We used high throughput analysis with microarray, FISH, and immunohistochemistry. They all had treated in our institution in last 6 years and their clinical courses were followed by medical records. Informed parental consent was obtained from their guardians and this study was approved by the institutional review board of Juntendo university. RESULTS Nine tumor samples were able to be analyzed and they are re-classified into high-grade glioma, neuroblastoma, sarcoma, embryonal tumors with multilayered rosettes, C19MC altered (ETMR). They resembled each other closely in morphology, and therefore, it was not able to be classified by histopathological findings. There was a case of pineoblastoma, whose molecular background suggested that the tumor was re-classified into neuroblastoma. In terms of treatments, we have succeeded in neuroblastoma cases so far, ETMRs were required multiple surgeries and radiations to maintain remissions. CONCLUSIONS Re-classification of diagnosis based on the molecular background is necessary to clarify the optimization of treatments for pediatric brain tumors, and the comprehensive methods is required. We present our methods for molecular diagnosis in clinical field and future plans.

BACKGROUND Admitting patients to an intensive care or medium care unit (ICU/MCU) after adult supratentorial tumor craniotomy remains common practice even though some studies have suggested lower level care is sufficient for selected patients. We have introduced a “no ICU, unless” policy for tumor craniotomy patients. OBJECTIVE To provide a quieter postoperative environment for patients, reduce the burden on the ICU department, and to evaluate whether costs can be reduced. METHODS A cohort study was performed comparing patients that underwent tumor craniotomy for supratentorial tumors during 1 yr after introduction (n = 109) of the new policy with the year before (n = 107). Rate of complications was evaluated, as was the length of stay and patient satisfaction using qualitative evaluation. Finally, costs were evaluated comparing the situation before and after implementation of the new protocol. RESULTS A reduction in ICU/MCU admittance from 64% to 24% of patients was found resulting in 13.3% cost reduction (€1950 per case), without increasing the length of stay at the ward. The length of stay in the hospital was similar. Complications were significantly reduced after implementing the new policy (0.98 vs 0.53 per patient, P = .003). Patients that were interviewed after the new policy reported feeling safe and at ease at the ward. CONCLUSION Changing our policy from “ICU, unless” to “no ICU, unless” reduced complication rates and length of stay in the hospital while keeping patients satisfied. Hospital costs related to the admission have been significantly reduced by the new policy.

Young age represents an adverse prognostic factor in children with ependymomas. Their treatment is challenging since beneficial therapeutic options are limited. As ependymomas are considered a biologically heterogeneous group we aimed to characterize infant ependymomas in respect to their histological and genetic features. We analyzed 28 ependymomas in children younger than 18 months at diagnosis treated according to HIT2000-E protocols in which irradiation was postponed until the age of 18 months. All cases underwent neuropathological review, including immunohistochemical characterization. Genome-wide copy number alterations (CNA) were assessed by molecular inversion probe assays and RELA and YAP1 fusions were detected by RT-PCR and sequencing. All infant ependymomas were anaplastic (WHO grade III). Complete resection was accomplished in 57% of cases. 75% of cases were located in the posterior fossa, all of which showing loss of H3-K27me3, characteristic for PFA ependymomas. CNA analysis showed a stable genome in all cases. No gain of chromosome 1q was observed, an adverse prognostic marker in PFA tumors of older children. After a median follow-up of 5.4 years, 71% relapsed, and 43 % died. Seven ependymomas occurred in the supratentorial region of which in only two cases a complete resection could be achieved. Four tumors carried C11orf95-RELA fusions and two cases typical YAP1-MAMLD1 fusions (one case, not analyzable). The RELA-fused cases did not display CDKN2A loss as an adverse indicator of prognosis in this disease entity. Although 43% of infants with supratentorial ependymomas relapsed, all patients survived (median follow-up, 8.0 years). Infant ependymomas seem to consist of three biological entities: supratentorial tumors carrying RELA or YAP fusions and PFA ependymomas. The latter showed a particularly unfavorable outcome even though chromosome 1q gain was not present. Further biological studies are warranted in these neoplasms to identify prognostic markers and suitable targets for a more effective treatment.

Desmoplastic infantile ganglioglioma (DIG) is a rare, distinctive, supratentorial neoplasm with a generally favorable prognosis. Clinical, radiographic, and pathologic features can sometimes mimic those of a malignant tumor and other serious intracranial disorders. The author describes his experience with 3 cases of DIG, each of which initially masqueraded as another neurological disease with a very different prognosis. Case 1 was an infant boy referred for evaluation of a hemorrhagic infarction at birth. Case 2 was an infant girl referred for evaluation of a holohemispheric malignant neoplasm. Case 3 was an infant girl referred for evaluation of an intracranial mass believed to be a subdural empyema or possible sarcoma. In each case the lesion was resected and found to be a WHO grade I DIG. Each child has had a benign postoperative course. DIG can be mistaken for other serious neurological conditions including malignant neoplasm, cerebral infarction, and infection. It is prudent to consider this rare, low-grade resectable tumor in the differential diagnosis of atypical intracranial masses of childhood, as the impact on prognosis can be profound. The author discusses management strategies for DIG, including a role for molecular sequencing.

The LACE+ index (Length of stay, Acuity of admission, Charlson Comorbidity Index score, and Emergency department [ED] visits in the past 6 months) is a tool used to predict 30-day readmissions. We sought to examine this predictive tool in patients undergoing brain tumor surgery.Admissions and readmissions for patients undergoing craniotomy for supratentorial neoplasm at a single multihospital academic medical center were analyzed. All brain tumor cases for which the patient was alive at 30 days after surgery were included (n = 352). Simple logistic regression analyses were used to assess the ability of the LACE+ index and subsequent single variables to accurately predict the outcome measures of 30-day readmission, reoperation, and ED visit. Analysis of the model's or variable's discrimination was determined by the receiver operating characteristic curve as represented by the C-statistic.The sample included admissions for craniotomy for supratentorial neoplasm (n = 352). Assessment of the LACE+ index demonstrates a 1.02× increased odds of 30-day readmission for every 1-unit increase in LACE+ score (P = 0.031, CI = 1.00-1.03). Despite this, analysis of the receiver operating characteristic curve indicates that LACE+ index has poor specificity in predicting 30-day readmission (C-statistic = 0.58). A 1-unit increase in LACE+ score also predicts a 0.98× reduction in odds of home discharge (P0.001, CI = 0.97-0.99, C-statistic = 0.70). But LACE+ index does not predict 30-day reoperation (P = 0.945) or 30-day ED visits (P = 0.218).The results of this study demonstrate that the LACE+ index is not yet suitable as a prediction model for 30-day readmission in a brain tumor population.

Meningiomas are highly vascularized tumors which may recruit pial blood supply. Pial supply complicates tumor treatment in numerous ways. The objective of this study was to establish a reliable MRI-based diagnostic score to predict the existence of pial blood supply in supratentorial intracranial meningiomas and then correlate the score with clinical and surgical outcomes and histopathological findings. We performed a retrospective analysis of supratentorial histologically proven meningiomas in our institution from 2010 to 2018. A score was built based on MRI criteria and correlated with digital subtraction angiography (DSA) pial vascularization assessment. The score was then validated on a second independent population recruited with the same modalities. Logistic regression identified four parameters related to pial blood supply which were used to build the score: skull base location, tumor size > 45 mm, peritumoral flow voids, and incomplete cerebrospinal fluid rim. The overall diagnostic performance in predicting pial blood supply was as follows: sensitivity 97.8%, specificity 76.9%, predictive positive value 88.2%, negative predictive value 95.2%, and accuracy 90.3%. Inter-reader agreement and Cohen’s kappa were good, respectively, of 90.7% and 0.69. A high score was associated with aggressive meningioma (World Health Organization II–III) (p = 0.04) and with greater importance of pial supply relative to dural supply. We have identified a reliable way to use MRI to predict the existence of pial blood supply in supratentorial intracranial meningiomas. A higher score also predicted higher grade meningioma. • Accurate and reproducible MRI score composed of four items to predict the existence of pial blood supply in supratentorial meningioma. • High score is associated with high-grade meningioma (WHO II–III) but also with greater importance of pial supply relative to dural supply.

A 25-year-old female presented with a generalized tonic-clonic seizure. She had no previous history of seizures. A brain magnetic resonance imaging scan revealed a solitary enhancing mass in the right fronto-parietal cortex. During surgery, the mass was noted to be pure cortical with no connection to the ventricular lining. The tumor was completely resected. After surgery, the patient had no further seizures. The biopsy result showed a supratentorial ependymoma, which was C11orf95-RELA-fusionpositive.

OBJECTIVE An unexpectedly high incidence of sarcomas of the Central Nervous System (SCNS) was recently observed in Peru. We describe clinical and biological characteristics of the disease. METHODS Seventy pediatric patients with primary SCNS diagnosed between January 2005 and June 2018 were analyzed. DNA methylation profiling and gene panel sequencing was available from 28 and 27 tumors, respectively. RESULTS Median age was 6 years (range 2–17.5), 66/70 patients had supratentorial tumors, 56 patients intratumoral hemorrhage at diagnosis. Three patients fulfilled clinical criteria of NF1; 35 had café-au-lait spots and/or freckling. DNA-methylation profiling classified 28/28 as “intracranial spindle cell sarcoma with rhabdomyosarcoma-like features and DICER1 mutations”. DICER1 mutations were found in 26/27, TP53 mutations in 22/27, and RAS-pathway gene mutations (NF1, KRAS, NRAS) in 19/27 tumors, all of which were somatic (germline control available in n=19 cases). Survival was analyzed in 57 patients with non-metastatic disease who received adjuvant therapy. Two patients had metastatic disease, eleven did not receive or abandoned treatment. Two-year OS was 66.3% (95%-CI: 54–81%), 2-year PFS 51% (38–67%). PFS was highest in patients treated with postoperative ICE chemotherapy followed by radiotherapy and ICE (2y-EFS 79% [59–100%], n=18) and worse after upfront radiotherapy followed by ICE (40% [19–85%]; n=10) or VAC (50% [28–88%], n=12) and radiotherapy only (21% [6–71%], n=11; p=0.008). CONCLUSION Primary SCNS with DICER1 mutation have an aggressive clinical course. A combination of chemotherapy and radiotherapy seems beneficial. A link to a cancer predisposition syndrome could not be established so far.

OBJECTIVE Our objective was to quantify resection outcomes and operative morbidity in paediatric brain tumour surgery using existing scales, assessing their applicability. METHODS We investigated morbidity using the Clavien-Dindo (CD) scale and the Drake classification. All paediatric patients receiving a biopsy or craniotomy for an intracranial tumour in a single tertiary paediatric neurosurgery centre between January 2008 and December 2018 were studied. Complications up to day 30 post op were graded. RESULTS There were 459 operations: 92 biopsies and 367 craniotomies comprising 166 infratentorial and 292 supratentorial tumours. Median age was 9 years (56% male). The surgical goal was achieved or exceeded in 94% of cases. Thirty-day mortality was 1.31% with all deaths related to disease and none to surgical complications. The overall CD score was 1 in 10.9% of cases, 2 in 18.9%, 3A in 1.7%, 3B in 11.8%, and 4 in 1.1%. There was no operative morbidity in 54% of cases. Using the Drake classification, meningitis was seen in 3.92% of cases, seizures in 3.92%, neurological deficit (that persisted at 30 days) in 8.5%, CSF leak in 5.01%, wound infection in 1.96%, haemorrhage 1.75 %, shunt infection in 1.53%, shunt block in 0.65%, medical complications in 2.4%, and others in 3.05%. CONCLUSIONS This is the largest series presenting morbidity from paediatric brain tumour surgery, and the first to validate the CD scale. Our morbidity on the Drake scale was comparable with other series. There is a need to develop improved tools to quantify morbidity in this high-risk specialty.

Enhanced Recovery After Surgery is a multimodal perioperative care pathway designed to achieve early discharge in patients undergoing major surgery. Recent advances in neurosurgery allow for shorter duration of anesthesia and surgery, faster recovery, and earlier discharge from hospital. The purpose of this retrospective observational study was to assess the incidence of early discharge from hospital in patients undergoing craniotomy for supratentorial brain tumours as well as to explore the associated perioperative factors, anesthesia techniques, and complications. The medical records of all patients who underwent craniotomy (less than four-hour duration) for supratentorial tumour over a five-year period were retrospectively reviewed. The data analyzed included the postoperative discharge destination, type of anesthesia—i.e., general anesthesia (GA) vs awake craniotomy (AC), and the incidence of adverse events. Data from 329 patients [mean (SD) age 48 (12) yr; 164 male, 165 female] were analyzed, including 198 (AC, n = 157; GA, n = 41) patients who were preoperatively scheduled for same-day discharge. Successful same-day discharge occurred in 175/198 (88.4%) of these patients (AC, n = 139; GA, n = 36). Five (2.9%) of the 175 patients (4 AC, 1 GA) with same-day discharge required readmission to hospital within the first 12 hr after discharge. Six (1.8%) of the 329 total patients had a documented postoperative intracranial bleed, but none occurred after initial discharge from hospital. Same-day discharge from hospital is possible in carefully selected patients after both GA and AC for supratentorial tumour surgery.

Objectives Cognitive deficits caused by extra-axial benign brain tumors like meningiomas and the course of these deficits after surgery is not well known. The aim of the study is to assess the pre-operative and post-operative cognitive functions in patients with meningiomas in the supratentorial compartment. Materials and methods In this prospective study, patients with clinico-radiological diagnosis of supratentorial meningioma, operated upon and later confirmed by histopathological examination, were included. The patients were evaluated for cognitive deficits before and after surgery. The various clinical and radiological factors influencing the cognitive status were evaluated. Results A total of 57 patients were enrolled into the study. Out of 57, 22 were males and 35 were females. The frontal group had 22 patients, the parietal group had 10 patients, the temporal group had 10 patients, the occipital group had 6 patients, and the suprasellar group had 9 patients. Meningiomas, although extra-axial, caused significant cognitive deficits in 42 patients (73.7%). The highest frequency of cognitive deficits is seen in the frontal and temporal group of meningiomas (90% each). Frontal meningiomas with volume greater than 35cc and peritumoral edema greater than 40cc caused a higher frequency of cognitive deficits. Also, patients with raised ICP had significant cognitive deficits. Postoperatively there was a significant improvement in the cognitive functions in the frontal and temporal groups. Conclusion Meningiomas cause cognitive deficits in 73.7% of patients. Anatomical location of meningioma, elevated ICP, the volume of meningioma and extent of peritumoral edema significantly influence the incidence of cognitive deficits. Post-operatively, the cognitive deficits improve significantly in the frontal and temporal group.

BackgroundSedation is commonly used in neurosurgical patients but has been reported to produce transient focal neurologic dysfunction. The authors hypothesized that in patients with frontal–parietal–temporal brain tumors, focal neurologic deficits are unmasked or exacerbated by nonspecific sedation independent of the drug used.MethodsThis was a prospective, randomized, single-blind, self-controlled design with parallel arms. With institutional approval, patients were randomly assigned to one of the four groups: “propofol,” “midazolam,” “fentanyl,” and “dexmedetomidine.” The sedatives were titrated by ladder administration to mild sedation but fully cooperative, equivalent to Observer’s Assessment of Alertness and Sedation score = 4. National Institutes of Health Stroke Scale (NIHSS) was used to evaluate the neurologic function before and after sedation. The study’s primary outcome was the proportion of NIHSS-positive change in patients after sedation to Observer’s Assessment of Alertness and Sedation = 4.ResultsOne hundred twenty-four patients were included. Ninety had no neurologic deficits at baseline. The proportion of NIHSS-positive change was midazolam 72%, propofol 52%, fentanyl 27%, and dexmedetomidine 23% (P less than 0.001 among groups). No statistical difference existed between propofol and midazolam groups (P = 0.108) or between fentanyl and dexmedetomidine groups (P = 0.542). Midazolam and propofol produced more sedative-induced focal neurologic deficits compared with fentanyl and dexmedetomidine. The neurologic function deficits were mainly limb motor weakness and ataxia. Patients with high-grade gliomas were more susceptible to the induced neurologic dysfunction regardless of the sedative.ConclusionsMidazolam and propofol augmented or revealed neurologic dysfunction more frequently than fentanyl and dexmedetomidine at equivalent sedation levels. Patients with high-grade gliomas were more susceptible than those with low-grade gliomas.

Gliomas with 1p/19q loss of heterozygosity (LOH) are known to be associated with longer patient survival and higher sensitivity to treatment than tumors without 1p/19q LOH. This study was designed to clarify whether the preoperative finding of calcification on CT was correlated with 1p/19q LOH in patients with suspected WHO grade II and III gliomas. This study included 250 adult patients who underwent resection for primary supratentorial tumors at Tokyo Women’s Medical University Hospital. The tumors were suspected, based on MRI findings, to be WHO grade II or III gliomas. The presence of calcification on the patients’ CT images was qualitatively evaluated before treatment. After surgery, the resected tumors were examined to determine their 1p/19q status and mutations of IDH1 and p53. The presence of calcification was significantly correlated with 1p/19q LOH (P

BACKGROUND: This study aims to identify the prevalence of and risk factors for seizure development after supratentorial brain tumor resection in pediatric patients. This could be used to guide the postoperative management and usage of anti-epileptic drugs (AEDs). METHODS: Retrospective study was conducted for patients between 0 and 21 years with supratentorial tumor resection between 2005 and 2015 at a single institution. RESULTS: Two hundred patients (114 males/86 females) were identified. Median age at resection (±SD) was 9.025 ± 5.720 years and mean follow-up was 4 ± 2 years. Resection was gross total in 82 patients (41%) and partial in 118 patients (59%); 66 patients (33%) experienced preoperative seizures, and 67 patients (34%) experienced postoperative seizures; 18 patients (27%) had early seizures, and 49 patients (73%) had late seizures. Univariate analysis identified risk factors for postoperative seizures as: preoperative seizures (P < 0.001), age less than 2 years (P = 0.003), temporal location (P < 0.001), thalamic location (P = 0.017), preoperative hyponatremia (P = 0.017), World Health Organization grade (P = 0.008), and pathology (P = 0.005). Multivariate regression identified 5 robust risk factors: temporal location (odds ratio [OR] 4.7, 95% CI: 1.7–13.3, P = 0.003), age 0.05). CONCLUSIONS: This study reveals 5 risk factors for postoperative seizures after resection of supratentorial tumors. These factors should be considered in postoperative management of these patients.

Objective To identify variables associated with the development of pre- and postoperative seizures in patients who underwent surgical resection of intracranial meningiomas, in a patient cohort not routinely treated prophylactically with antiepileptic drugs (AED). Patients and methods Retrospective cohort study of 295 patients that underwent resection of a supratentorial meningioma at Odense University Hospital in between 2007–2015. Multivariate logistic regression was used to identify variables significantly correlating with pre- and postoperative seizures. Retrospective chart review was used to identify the rates of seizure incidence in patients, and the effect of AED on them. Results The presence of peritumoral edema (OR:18.00, 7.44–43.58) was identified as predictor of preoperative seizure, while headache (OR:0.43, 0.22–0.84) and neurological deficit (OR:0.18, 0.09–0.39) were associated with a reduced incidence of preoperative seizures. The rates of postoperative seizure were increased in meningiomas in the left side (OR:1.91, 1.11–3.29), and reduced for tumor location in the convexity/parasagittal/falx (OR:0.72, 0.59–0.88) as well as in the absence of postoperative complications (OR:0.19, 0.10–0.36). 24.4% of the patients experienced seizures preoperatively, and a complete seizure freedom was achieved in 63.9% of them. 75.6% of the patients did not experience seizures preoperatively, but 15.2% of them then developed seizures postoperatively. A total of 20.3% of the patients experienced seizures after surgery. Time to first seizure in patients that did not experience seizures preoperatively but developed seizures after surgery, was one week (47%). However, first time postoperative seizures were also observed within one month postoperative (21%) and three months after surgery (32%). AED had a treatment success rate of 98.2% in preoperative seizures, and 98.0% in postoperative seizures. Conclusion Seizures after supratentorial meningioma surgery is common also in patients with no seizures preoperatively and mainly occurs within the first three postoperative months. AED are effective in controlling seizures.