Brain tumors Flashcards
meningiomas
metastasis
hemangiopericytomas are
extra axial tumors
posterior fossa tumors in kids
- pilocytic astrocytoma
ependymomas
medulloblastomas
choroid plexus tumors
fibrillary
eosinophilic granular body
rosenthal fibers
what tumor is this?
pilocytic astrocytoma
How do posterior fossa tumors comonly present?
cerebellar signs
hydrocephalus
prognosis of grade 1 tumors
non-infiltrative
surgically curable
Typical MRI findings for a low grade glioma are
Hypointense on T1
Hyperintense on T2
Fried-egg appearing cells
chicken wire vasculature typical for
Oligodendroglioma
Presentation of oligodendroglioma
seizure 50-80% of time rather than a neurologic deficit
More responsive group of oligodendroglioma patients have
1p/19q deletion in addition to an IDH mutation
Infiltrative gliomas grades 2-4 are
incurable
Which tumors do not enhance on MRI and have calcification on CT
low grade gliomas
Microvascular prolfieration
pseudopalisading necrosis
typical histologic findings of
glioblastoma
secondary!
a heterogeneously enhancing mass
ring enhancing lesion
secondary glioblastoma
the stupp protocol for glioblastoma involves
chemorad for 6 weeks after resection
patients with tumors expressing MGMT are
resistant to tamezolamide
