Meningioma: Difference between revisions
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= Meningioma Grades = | = Diagnosis = | ||
== Imaging findings == | |||
* Wide dural based | |||
* Hyperostosis | |||
* Dural tail | |||
* Calcifications | |||
* Homogeneous enhancement | |||
* Pneumosinus dilatans | |||
* MRI: isointense on T1WI, hypointense on T2WI | |||
== Histopathology == | |||
[[File:Meningioma - Histopathology .jpg|thumb|500x500px]] | |||
* The tumour cells have features of both syncytial and fibroblastic type forming <mark>whorls</mark> which contain central laminated areas of calcification called <mark>psammoma bodies</mark>. | |||
<br clear="all"> | |||
=== Meningioma Grades === | |||
{| class="wikitable" style="width:100%;" | {| class="wikitable" style="width:100%;" | ||
! GRADE I | ! GRADE I | ||
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* Anaplastic (malignant) meningioma | * Anaplastic (malignant) meningioma | ||
|} | |} | ||
== Immunohistochemical staining == | == Immunohistochemical staining == | ||
Latest revision as of 22:57, 4 March 2024
Related pages
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.
Diagnosis
Imaging findings
- Wide dural based
- Hyperostosis
- Dural tail
- Calcifications
- Homogeneous enhancement
- Pneumosinus dilatans
- MRI: isointense on T1WI, hypointense on T2WI
Histopathology
- The tumour cells have features of both syncytial and fibroblastic type forming whorls which contain central laminated areas of calcification called psammoma bodies.
Meningioma Grades
| GRADE I | GRADE II | GRADE III |
|---|---|---|
|
|
|
Immunohistochemical staining
- EMA ⊕ in ~80%