Osseous meningioma

Osseous meningiomas are rare histological variants of meningiomas grouped into the subtype of metaplastic meningiomas, being WHO grade I tumours. They are characterised by osseous metaplasia within the tumour cells, and should not be confused with psammomatous meningiomas, and intraosseous meningiomas.

Although reported numbers are too small to confirm that this is definitely the case, they appear to share similar clinical presentation, treatment, and prognosis as other meningiomas, and thus these features are not repeated here. 


Metaplastic meningiomas are characterised by tumour cells sharing the characteristics of tissues from other parts of the body. In this subtype, there is metaplasia of the arachnoid tumour cells or interstitial cells into bone cells. 

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Article information

rID: 42511
Tag: refs, cases
Synonyms or Alternate Spellings:
  • Osseous meningiomas

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