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أورام الجهاز العصبي - Coggle Diagram
أورام الجهاز العصبي
Neuronal Tumors
Gangliogliomas
neoplastic ganglion cells+glial cells
About 20% to 50% of gangliogliomas harbor point mutations in the BRAF gene
temporal lobe
Dysembryoplastic neuroepithelial
children and young adults
grade 1(low-grade tumor)
superficial temporal lobe
CNS
Gliomas
Adult-type diffuse gliomas
Astrocytoma, IDH-mutant
Glioblastoma, IDH-wildtype
Oligodendroglioma, IDH-mutant, and 1p/19q-codeleted
the best prognosis
Grade 2_3
detected in40_50
5_15%gliomas
frontal or temporal lobes
mutations in the promoter of the TERT gene
"fried egg" appearance
Circumscribed astrocytic gliomas
Pilocytic astrocytoma
affect children and young adults.
cerebellum (commonly)
the third ventricle
the optic pathways
cerebral hemispheres(occasionally)
obstructive hydrocephalus
intracranial pressure
do not have mutations in IDH1 and IDH2
Ependymomas
subependymoma
Grade1
myxopapillary ependymoma
Grade2
Embryonal (Primitive) Neoplasms
Meningiomas