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some common CNS and PNS tumors


some common CNS and PNS tumors

المعلومة

# Brain Tumors :
* 2 third : primary
* 1 third : metastatic
( Lung"35%" , Breast"17%" , GI"6%" ,Melanoma"6%" , Kidney"5%" )

#The 5 most common brain tumors :
1- Glioblastoma multiform ( and most fatal )
2- Meningioma ( benign noninvasive : falx &convexity )
3- Schwanoma (benign : peripheral)
4- Ependymoma ( ventricles , 60%"most common" of spinal cord glioma )
5- Medulloblastoma ( 2nd most common posterior fossa tumor in children )

# Some Supratentorial tumors(70% of adults tumors) :
* Glioblastoma multiform (most common primary brain tumors)
* Astrocytomas (most common glioma in posterior fossa of children)
* Meningioma ( 2nd most common primary intracranial brain tumors after astrocytomas " 15%"
* Germinomas (most common cause of Parinaud’s syndrome

# Some Infratentorial tumors(70% of children tumors) :
* Craniopharyngioma (most common SUPRAsellar tumor in childhood and the most common cause of HYPOpituitarism in children )
* Pituitary adenomas (most common tumors of the pituitary gland , Prolactinoma is the most common PA )
* Ependymoma (most common spinal cord glioma"60%" )
* Cerebellar astrocytomas (most common pediatric intracranial tumor )
* Medulloblastoma (2nd most common pediatric posterior fossa tumor in children )

# Intraspinal tumor :
* Schwanoma 30%
* Meningioma 25%
* Gliomas 20%
* Sarcomas 12%
* Ependymoma (60% of intramedullary gliomas )

المرجع

High yield neuroanatomy - 3rd edition

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