Revision as of 22:40, 4 March 2024

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General information

Meningiomas are a group of tumors that are believed to originate in meningothelial cells of the arachnoid membrane.
They may be intracranial (MC), intraorbital, or intra-spinal.

GRADE I	GRADE II	GRADE III
Meningothelial meningioma Fibrous meningioma Transitional meningioma Psammomatous meningioma Angiomatous meningioma Microcystic meningioma Secretory meningioma Lymphoplasmacyte-rich meningioma Metaplastic meningioma	Atypical meningioma Clear cell meningioma Chordoid meningioma	Rhabdoid meningioma Papillary meningioma Anaplastic (malignant) meningioma

The tumour cells have features of both syncytial and fibroblastic type forming whorls which contain central laminated areas of calcification called psammoma bodies.

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 {{NoteBox|secondary}}<strong>Related pages</strong>
 * [[Anterior skull base Meningiomas]]
-* [[cavernous sinus meningioma|Cavernous sinus Meningiomas]]{{NoteBoxEnd}}
+* [[cavernous sinus meningioma|Cavernous sinus Meningiomas]]
+* [[Parasagittal and falx meningiomas]]{{NoteBoxEnd}}
 [[File:BT SupTentPostFossa OlfGrve 02.jpg|thumb|454x454px]]
 = General information =
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 |}
-= Parasagittal and falx meningiomas =
-== Sindou grading ==
-[[File:Sindou grading.png|thumb|400x400px]]
-Grading of meningioma invasion to SSS
-* Type I - attachment to lat. wall of sinus.
-* Type II - invasion of lat. recess.
-* Type III - invasion of lat. wall.
-* Type IV - invasion of lat. wall & roof.
-* Type V - total sinus occlusion, contral. wall spared.
-* Type VI - total sinus occlusion, invasion of all walls.<br clear="all">
 = Diagnosis =