Intracranial Osteolytic Malignant Meningiomas Appearing as Extracranial Soft-Tissue Masses

Neurosurgery. 1992 Jun;30(6):932-5. doi: 10.1227/00006123-199206000-00022.

Abstract

Malignancy is rare in intracranial meningiomas. Although the topic is widely discussed, there is little agreement in the literature as to the histological and radiological features that warrant the diagnosis of malignant meningioma. Three patients are described who had soft-tissue masses and underlying osteolytic lesions on computed tomography. All three patients also had a large intracranial component that proved to be a malignant meningioma. Rarely do meningiomas have all three of these features. We propose that a meningioma causing osteolysis and soft-tissue extension should be considered malignant until proven otherwise.

Publication types

  • Case Reports
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Aged
  • Aged, 80 and over
  • Female
  • Humans
  • Male
  • Meningeal Neoplasms / diagnostic imaging*
  • Meningeal Neoplasms / pathology
  • Meningeal Neoplasms / surgery
  • Meninges / pathology
  • Meningioma / diagnostic imaging*
  • Meningioma / pathology
  • Meningioma / surgery
  • Neoplasm Recurrence, Local / diagnostic imaging
  • Neoplasm Recurrence, Local / pathology
  • Neoplasm Recurrence, Local / surgery
  • Osteolysis / diagnostic imaging*
  • Osteolysis / pathology
  • Osteolysis / surgery
  • Scalp / pathology
  • Soft Tissue Neoplasms / diagnostic imaging*
  • Soft Tissue Neoplasms / pathology
  • Soft Tissue Neoplasms / surgery
  • Tomography, X-Ray Computed*