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What tumors are commonly seen at the cerebello-pontine angle?
- Schwanomas
- Meningiomas
- Epidermoids
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- Epidermoid Cyst in the CPA
- Relatively confined within and formed to the CPA
- Density similar to CSF
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- Meningioma in the CPA
- Attached to the dura with a lentiform appearance
- Enhances with contrast
- Hyperintense
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- Schwanomma
- Extends into the the IAC
- Hyperintense
- Enhances
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Glioma in the Suprasellar Region
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Meningioma in the Suprasellar Region
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What are the common tumors in the suprasellar region in young patients?
- Craniopharyngiomas
- Gliomas
- Germinomas
- Hamartomas
- Granulomatous Disease
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What are the common tumors int he suprasellar region in older patients?
- Pituitary Adenoma
- Meningiomas
- Aneurysms
- Craniopharyngiomas
- Sarcoid
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What are the common tumors of the pineal region?
- Germ Cell: Germinoma, Teratoma, Choriorcarcinoma, Yolk Sac
- Pineal: Pineocytoma and Pineoblastoma
- Other: Meningioma, Tectal Glioma, PNET
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Name the spinal cord tumors that are commonly Intramedullary.
- Ependymoma
- Astrocytomas
- Hemangioblastomas
- Mets
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- Intramedullary
- Spainl Astrocytoma
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- Intramedullary
- Hemagioblastoma
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What are the characteristics and differential for Intradural Extramedullary lesiosn of the spinal cord?
- Widening of the CSF space withCSF surrounging the tumor
- Nerve Sheath Tumor
- Meningioma
- Drop Mets (gliomas, germ cells, PNETs)
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- Intradural Extramedullary
- Spinal Meningioma
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- Intradural Extramedullary
- Spinal Drop Mets
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What are the characteristics and differential diagnosis for extradural lesions of thespinal cord?
- External compression of the CSF space
- Mets
- Myeloma / Lymphoma / Leukemia
- Vertebral Tumors
- Hemangiomas
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- Extradural
- Spinal Hemangioma
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- Ependymoma of the 4th Ventricle
- 4th > 3rd > Lateral
- Hydrocephalus
- 90% intracranial (2/3’s infratentorial) and 10% intraspinal- Infratentorial tend to be intraventricular (floor) while Supratentorial tend to be periventricular
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- Medulloblastoma
- 75% vermal, 25% CBLM hem
- Hyperintense T2
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- Neurocytoma
- Most commonly located intraventricularly with 50% being near theIVF of Monroe and often may mimic a SEGA in appearance on imaging
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What is the differential diagnosis for a lesion associated with the intraventricular region?
- Colloid Cysts
- SEGA
- Neurocytoma
- Meningioma (at the atrium)
- Choroid Plexus Tumors
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- Neurocytoma
- Very similar in appearance to oligodendroglyomas with sheets of small- Honeycomb-like arrangement of the cells- Dark cells but will be positive for synaptiphysin
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- Psamomma Bodies
- Seen in Medulloblastoma
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