Abstract
e14055 Background: Ependymomas originate from ependymal cells and account for 6.2% of primary brain tumors in the pediatric population. Adult and pediatric ependymomas are identical in histology, but present in different sites, with intracranial ependymomas seen in children and spinal ependymomas more frequent in adults. The unique presentation of ependymoma in children warrants exploration separate from adults; however, there is currently limited data providing a baseline understanding of pediatric ependymoma and those that it impacts. The National Cancer Database (NCDB) was analyzed to identify common presentations and demographic characteristics of ependymoma in children. Methods: Patients aged 18 and younger with a diagnosis of Ependymoma (ICD 9391-9394) were identified utilizing the National Cancer Database (NCDB) from 2004 – 2020 for a retrospective cohort analysis (N = 2,098). Demographic factors such as age, sex, race, ethnicity, primary site, insurance status, and surgical procedure were analyzed by descriptive statistics. Additionally, identical NCDB data was identified for patients over 18 years old for use as a comparison factor (N = 8,227). Results: A total of 2,098 pediatric patients were identified with an average age of diagnosis of 7.0 years (SD = 5.609, range = ( < 1) - 18 years) with a higher percentage being male (55.9%) than female (44.1%). The vast majority of cases of pediatric ependymoma originate in the brain (91.2%), followed by occurrences on the spinal cord and cranial nerves (8.8%). This differs from ependymoma in adults where only 44.8% of cases occur in the brain and 55.2% occur in the spinal cord. Of the 2,098 pediatric patients identified, they were histologically identified as either Ependymoma, NOS (51.5%), or Anaplastic Ependymoma (47.5%). Comparatively, Anaplastic Ependymoma makes up only 9.7% of ependymomas in adult populations. Additionally, the majority of patients were Non-Hispanic (76.3%) and white (76.9%). Most patients were privately insured (58.0%) followed by those insured by Medicaid (33.1%). Pediatric ependymoma is primarily treated with surgical resection (95.7%). Conclusions: Compared to adult occurrences, pediatric cases of ependymoma are not only unique in the site that they affect but also in histology, with a higher proportion of anaplastic ependymoma. This NCDB analysis is the first to specifically analyze pediatric ependymoma and fills a gap in our understanding of how this cancer presents in children. The majority of ependymoma patients are non-Hispanic and White with a primary site occurring in the brain rather than in the spinal cord, consistent with literature. These findings emphasize the importance of a deeper understanding of the nature of this disorder. Future research should further explore the impact of demographic and socioeconomic factors on the treatments utilized, and overall survival of pediatric patients with ependymoma.
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