title: Pediatric microcystic meningioma: a clinical, histological, and radiographic case-based review.
abstract: BACKGROUND
  Microcystic meningioma (MM) is a World Health Organization grade I tumor that is rare in the pediatric population. Meningiomas account for approximately 2-4 % of all childhood central nervous system (CNS) tumors compared to approximately 20 % of all adult CNS tumors. The authors present one of the few confirmed cases of microcystic meningioma in a child and discuss the characteristic radiographic appearance and histological findings.
  
  
  METHODS
  We report the case of an 11-year-old boy who presented with first-time seizure and imaging consistent with brain tumor. There was significant vasogenic edema within the entire right hemisphere, disproportionate to the size of the falcine-based tumor. Histopathological analysis revealed the microcystic subtype of meningioma.
  
  
  CONCLUSIONS
  We review the radiographic characteristics, histopathological findings, and reported pediatric cases of MM in conjunction with our case.
  
  
  CONCLUSIONS
  MM has distinct radiographic characteristics (variable enhancement, lack of a dural tail, and disproportionate vasogenic edema) that can be misinterpreted in the pediatric population, suggesting a more aggressive tumor.
authors.affiliation: Department of Neurosurgery and Brain Repair, Morsani School of Medicine, University of South Florida, Tampa, FL, USA.
authors.forename: Jotham
authors.initials: J
authors.lastname: Manwaring
authors.forename: Amir
authors.initials: A
authors.lastname: Ahmadian
authors.forename: Stacie
authors.initials: S
authors.lastname: Stapleton
authors.forename: Ignacio
authors.initials: I
authors.lastname: Gonzalez-Gomez
authors.forename: Luis
authors.initials: L
authors.lastname: Rodriguez
authors.forename: Carolyn
authors.initials: C
authors.lastname: Carey
authors.forename: Gerald F
authors.initials: GF
authors.lastname: Tuite
mesh_terms: D000367:Age Factors; D002648:Child; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008577:Meningeal Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D008579:Meningioma / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D011859:Radiography; D016896:Treatment Outcome