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36 Cards in this Set
- Front
- Back
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5 types of childhood brain tumors
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pilocytic astrocytoma
medulloblastoma ependymoma hemangioblastoma craniopharyngioma |
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pilocytic astrocytoma=
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low-grade astrocytoma
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usually well-circumscribed
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pilocytic astrocytoma
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in kids, most often found in posterior fossa (e.g. cerebellum)
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pilocytic astrocytoma
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may be supratentorial
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pilocytic astrocytoma
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GFAP (+)
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pilocytic astrocytoma
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benign, good prognosis
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pilocytic astrocytoma
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Rosenthal fibers
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eosinophilic corkscrew fibers
pilocytic astrocytoma |
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cystic + solid on gross exam
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pilocytic astrocytoma
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highly malignant cerebellar tumor
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medulloblastoma
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form of primitive neuroectodermal tumor
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medulloblastoma
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can compress 4th ventricle --> hydrocephalus
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medulloblastoma
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can send "drop metastases" to spinal cord
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medulloblastoma
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Homer-Wright rosettes
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medulloblastoma
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solid on gross exam
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medulloblastoma
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small blue cells
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medulloblastoma
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radiosensitive
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medulloblastoma
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ependymal cell tumors
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ependymoma
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MC found in 4th ventricle
can cause hydrocephalus |
ependymoma
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poor prognosis
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ependymoma
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characteristic perivascular pseudorosettes
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ependymoma
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rod-shaped blepharoplasts found near nucleus
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basal ciliary bodies
ependymoma |
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most often cerebellar
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hemangioblastoma
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assoc. w/ von Hippel-Lindau Sd when found with retinal angiomas
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hemangioblastoma
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can produce EPO --> secondary polycythemia
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hemangioblastoma
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foamy cells, high vascularity
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hemangioblastoma
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benign
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craniopharyngioma
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confused with pituitary adenoma
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craniopharyngioma
(can also produce bitemporal hemianopia) |
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MC childhood supratentorial tumor
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craniopharyngioma
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derived from remnants of Rathke's pouch
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craniopharyngioma
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calcification common
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(tooth-enamel like)
craniopharyngioma |
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childhood brain tumors are mostly ___tentorial
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infratentorial
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4 types of herniation Sd
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cingulate (subfalcine) herniation under falx cerebri
downward transtentorial (central) herniation uncal herniation cerebellar tonsillar herniation into foramen magnum |
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herniation sd that can compress ant. cerebral a.
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cingulate herniation
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uncus
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medial temporal lobe
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coma and death result when these herniations compress brainstem
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cerebellar tonsillar
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