Meningioma: Difference between revisions
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[[File:Meningioma - Histopathology .jpg|thumb|500x500px]] | [[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>. | * 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>. | ||
== Immunohistochemical staining == | |||
* EMA ⊕ in ~80% | |||
[[Category:Neuro-Oncology]] | [[Category:Neuro-Oncology]] | ||
[[Category:Meningioma]] | [[Category:Meningioma]] | ||
[[Category:Extrinsic Brain Tumors]] | [[Category:Extrinsic Brain Tumors]] | ||
Revision as of 22:45, 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.
Meningioma Grades
| GRADE I | GRADE II | GRADE III |
|---|---|---|
|
|
|
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.
Immunohistochemical staining
- EMA ⊕ in ~80%