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Pediatric microcystic meningioma: a clinical, histological, and radiographic case-based review

Jotham Manwaring1, Amir Ahmadian, Stacie Stapleton

  • 1Department of Neurosurgery and Brain Repair, Morsani School of Medicine, University of South Florida, Tampa, FL, USA.

Child'S Nervous System : Chns : Official Journal of the International Society for Pediatric Neurosurgery
|December 20, 2012
PubMed
Abstract

Insights

Microcystic meningioma (MM) is a rare pediatric brain tumor. This case highlights MM's distinct imaging features that may mimic more aggressive tumors in children.

Area of Science:

  • Pediatric neuro-oncology
  • Neuroradiology
  • Pediatric neuropathology

Background:

  • Microcystic meningioma (MM) is a rare World Health Organization grade I tumor in children, accounting for a small fraction of pediatric central nervous system (CNS) tumors.
  • Meningiomas are significantly less common in children (2-4% of CNS tumors) compared to adults (approximately 20%).

Observation:

  • An 11-year-old boy presented with a new-onset seizure and imaging suggestive of a brain tumor.
  • Radiological findings revealed a falcine-based tumor with disproportionately extensive vasogenic edema affecting the entire right cerebral hemisphere.

Findings:

  • Histopathological analysis confirmed the tumor as the microcystic subtype of meningioma.
  • Distinct radiographic characteristics of MM include variable enhancement, absence of a dural tail, and disproportionate vasogenic edema.

Implications:

  • The unique imaging features of pediatric MM can be misinterpreted, potentially leading to a misdiagnosis of a more aggressive tumor.
  • Understanding these characteristics is crucial for accurate diagnosis and appropriate management of pediatric meningiomas.

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