Osseous meningiomas are rare histological variants of metaplastic meningiomas. They are characterized by osseous metaplasia within the tumor 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.
Pathology
Metaplastic meningiomas are characterized by tumor cells sharing the characteristics of tissues from other parts of the body. In this subtype, there is metaplasia of the arachnoid tumor cells or interstitial cells into bone cells.
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