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8 Cards in this Set
- Front
- Back
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Most common tumors:
Children? |
Children = meduloblastomas
Adult = Astrocytomas ... can progress to secondary glioblastomas (collect mutations...clonal selection) |
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Meningioma cell origin.
Pathology of meningioma. |
Cells lining arachnoid villa. Great prognosis if treated early.
Path = whirls |
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Sites of meningioma growth
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falx cerebri, foramen magnum, sphenoid ridge, olfactory groove (PATIENTS WITH SMELL DEFECTS - CN II, III defects?)
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Location of tumors presenting w/ seizures?
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Temporal lobe involvement. Low grade tumors (better prognosis) = higher epilepsy rates.
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Edematous white matter
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Pass through tight junctions. Increase in proteinacious edema.
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Causes of ring-enhancing lesions
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PRIMARILY METASTASES (b/c highest prevalence). Can be abscesses, primary tumors, hematomas, MS
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Tumor Grading Scale
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I (Low = good): Cellularity
II: Pleiomorphism III: Mitoses IV: (BAD) Necrosis V: (BAD) Angiogenesis |
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Glioblastomas
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BAD BAD!
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