Term
Most common adult brain tumor. Grave prognosis (<1 year life expectancy)
Stain astrocytes |
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Definition
Glioblastoma multiforme
Found in the cerebral hemispheres |
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Term
Can cross corpus callosum ("butterfly glioma")
stains astrocytes
Stain astrocytes for GFAP.
"Pseudopalisading" pleomorphic tumor cells - borders central area of necrosis and hemorrhage |
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Definition
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Term
2nd most common adult brain tumor.
Arises from arachnoid cells external to brain |
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Definition
Meningioma
Usually resectable. Located in convexities of hemispheres and parasagittal region |
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Term
Spindle cells concentrically arranged in a whorled pattern.
Showing psammoma bodies (laminated calcifications) |
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Definition
Meningiomas
Arise from arachnoid cells external to brain |
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Term
| 3rd most common adult tumor. Usually found at the cerebopontine angle. S-100 positive |
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Definition
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Term
| Localized to CN VIII and commonly found bilaterally in neurofibromatosis type 2 |
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Definition
| Schwannoma (acoustic schwannoma) |
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Term
| Rare, slow growing frontal lobe tumor. Shows chicken-wire capillary pattern |
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Definition
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Term
| Histology of tumor cells look like "fried egg", rounded nuclei with clear cytoplasm (peri-nuclear halo and cytoplasmic clearing) |
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Definition
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Term
| Causes bitemporal hemianopia and hyper/hypo pituitarism |
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Definition
Pituitary adenoma
Located in rathke's pouch |
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Term
| In children; mostly found in the posterior fossa. May be supratentorial. |
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Definition
Pilocytic astrocytoma
Usually has a good process and is benign |
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Term
| Highly malignant cerebellar tumor. A form of primitive neuroectodermal tumor (PNET) that can compress the 4th ventricle |
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Definition
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Term
| Appears as Homer Wright Rosettes. Solid blue cells on histology surrounding intracranial tangles |
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Definition
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Term
| Displays rosenthal fibers - eosinophilic corkscrew fibers |
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Definition
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Term
| Commonly found within the 4th ventricle. Can cause hydrocephalus. |
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Definition
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Term
| Appears with perivascular pseurosettes surrounding cerebral vessel. Rod shaped blepharoplasts near nucleus |
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Definition
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Term
| Most often cerebellar, associated with Von Hippel-Lindau syndrome |
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Definition
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Term
Foamy cells and high vascularity
Can produce erythropoietin to cause secondary polycythemia |
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Definition
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Term
| Benign childhood tumor. Can also cause bilateral hemi-anopia |
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Definition
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Term
| Derived from Rathke's pouch, most common childhood supratentorial tumor |
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Definition
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Term
Shows rosenthal fibers- eosinophilic corkscrew fibers
May be cystic and solid at the same time |
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Definition
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