Objective: Acute postconcussive headaches are problematic for children after mild traumatic brain injury. There are no evidence-based guidelines for their management. This pilot study aims to assess the feasibility and efficacy of routine analgesia administration. Methods: A four-arm open-label randomized controlled trial pilot/feasibility study was conducted: (i) acetaminophen, (ii) ibuprofen, (iii) alternating acetaminophen and ibuprofen and (iv) a control group. Children and youth 8 to 18 years of age presenting to emergency department with headache within 48 hours of their first concussion were recruited consecutively and sequentially randomized. Children with abnormal neuroimaging, history of previous concussions and bleeding disorder were excluded. A headache survey was administered at recruitment. All participants were provided with standard concussion management education and were also instructed on how to use the headache diary for the 1-week study follow-up period. The diary captures (i) headache days, (ii) number of headaches, (iii) headache intensity and (iv) return-to-school information. Feasibility was assessed based on study recruitment and compliance. Results: There were no feasibility concerns with the recruitment and no major compliance issues. Patients on acetaminophen, ibuprofen or both had significantly less headache days, episodes of headache and lower headache intensity than did the standard care group. Patients on both ibuprofen and acetaminophen (79.0%) and on ibuprofen alone (61.0%) were more likely to be back at school 1 week postinjury as compared with the acetaminophen group (33.3%) and the standard care group (21.1%). Conclusion: Results showed routine analgesia administration was feasible and effective for postconcussive headache management. A larger full-scale randomized controlled trial is required to further assess the efficacy with longer follow-up, a wider variety of patients and more concussion related outcomes. L'utilisation d'ibuprofène et d'acétaminophène pour soulager les céphalées aiguës postcommotionnelles : une étude piloteObjectif : Les céphalées postcommotionnelles posent problème chez les enfants après une légère commotion cérébrale. Il n'y a pas de lignes directrices factuelles sur leur prise en charge. La présente étude pilote vise à évaluer la faisabilité et l'efficacité de l'administration systématique d'analgésiques. Méthodologie : Les chercheurs ont réalisé une étude pilote et de faisabilité ouverte, aléatoire et contrôlée en quatre volets : i) acétaminophène, ii) ibuprofène, iii) alternance entre l'acétaminophène et l'ibuprofène et iv) groupe témoin. Des enfants et des adolescents de huit à 18 ans qui ont consulté à l'urgence à cause de céphalées dans les 48 heures suivant une première commotion ont été recrutés de manière consécutive, séquentielle et aléatoire. Les enfants dont la neuro-imagerie était anormale ou qui avaient des antécédents de commotion ou des troubles hémostatiques étaient exclus. Les enfants ont répondu

The surgical risk factors and neuro-imaging characteristics associated with cerebellar mutism (CM) remain unclear and require further investigation. Therefore, we aimed to examine surgical and MRI findings associated with CM in children following posterior fossa tumor resection. Using our data registry, we retrospectively collected data from pediatric patients who acquired CM and were matched based on age and pathology type with individuals who did not acquire CM after posterior fossa surgery. The strength of association between surgical and MRI variables and CM were examined using odds ratios (ORs) and corresponding 95% confidence intervals (CIs). A total of 22 patients (11 with and 11 without CM) were included. Medulloblastoma was the most common pathology among CM patients (91%); the remaining 9% were diagnosed with a pilocytic astrocytoma. Tumor attachment to the floor of the fourth ventricle (OR 6; 95% CI 0.7-276), calcification/hemosiderin deposition (OR 7; 95% CI 0.9-315.5), and post-operative peri-ventricular ischemia on MRI (OR 5; 95% CI 0.5-236.5) were found to have the highest measures of association with CM. Our results may suggest that tumor attachment to the floor of the fourth ventricle, pathological calcification, and post-operative ischemia have a relatively higher prevalence in patients with CM. Collectively, our work calls for a larger multi-institutional cohort study of CM patients to encourage further investigation of the determinants and management of CM in order to potentially minimize its development and predict onset.

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NEURO-ONCOLOGY • NOVEMBER 2017 ter survival compared to non-Hispanics (aHR 0.84; 95% CI 0.78-0.90). Current smokers fared significantly worse (aHR 1.11; 95% CI 1.04-1.18). Higher socioeconomic status was also associated with increased survival (aHR 0.91, 95% CI 0.84-0.99). Younger age at diagnosis, surgical resection, chemotherapy, radiation therapy, and female sex were also associated with significantly improved outcomes. CONCLUSIONS: This study demonstrates clear sociodemographic and survival disparities for glioblastoma patients. This analysis considers race and ethnicity as two distinct variables and shows improved survival outcomes for Hispanic patients. Additionally, patients from neighborhoods with higher socioeconomic status have increased survival. Further analysis is needed to assess the role of histologic and molecular subtypes in these ethnic groups.