Lipomatous meningioma

J Clin Neurosci. 2007 Oct;14(10):1003-6. doi: 10.1016/j.jocn.2006.03.011. Epub 2007 Jan 19.

Abstract

We present a case of intracranial lipomatous meningioma in the parietal convexity in a 64-year-old woman. The mass showed low density on computed tomography, was hyper-intense on T1-weighted magnetic resonance images, and had decreased intensity upon imaging with fat-suppressed sequences. Gross total removal of the tumor was performed. Histopathologically, the tumor was a meningioma with mixed transitional and lipomatous patterns. Immunohistochemically, the meningothelial foci were positive for epithelial membrane antigen (EMA) and vimentin, and negative for S-100 protein. The lipomatous foci were positive for EMA, vimentin, and S-100 protein. The Ki-67 index values of the meningothelial and lipomatous foci were 1.0% and 1.8%, respectively. We review previous reports of lipomatous meningioma and discuss its clinical presentations and pathology.

Publication types

  • Case Reports

MeSH terms

  • Biomarkers, Tumor / analysis
  • Biomarkers, Tumor / metabolism
  • Epithelial Cells / metabolism
  • Epithelial Cells / pathology
  • Female
  • Humans
  • Immunohistochemistry
  • Ki-67 Antigen / analysis
  • Ki-67 Antigen / metabolism
  • Lipoma / pathology*
  • Lipoma / physiopathology
  • Magnetic Resonance Imaging
  • Meningeal Neoplasms / pathology*
  • Meningeal Neoplasms / physiopathology
  • Meningioma / pathology*
  • Meningioma / physiopathology
  • Middle Aged
  • Mucin-1 / analysis
  • Mucin-1 / metabolism
  • Neoplasms, Multiple Primary / pathology
  • Neoplasms, Multiple Primary / physiopathology
  • Neurosurgical Procedures
  • Parietal Lobe / pathology
  • Parietal Lobe / physiopathology
  • Tomography, X-Ray Computed
  • Vimentin / analysis
  • Vimentin / metabolism

Substances

  • Biomarkers, Tumor
  • Ki-67 Antigen
  • Mucin-1
  • Vimentin