CNS-tumors Flashcards
what is a glioblastoma multiforme
malignant high grade tumor of astrocytes seen in adults
what tumor crosses the corpus callosum?
“butterfly lesion”
gliobastoma multiforme
what 2 CNS tumors are GFAP positive
glioblastoma multiforme
pilocytic astrocytoma
what CNS tumor is associated with estrogen and seen in women
meningioma
what is a meningioma
benign tumor of the arachnoid cells
what does the histology of a meningioma show
psammoma bodies & whorled pattern
what tumor frequently involves cr n 8 leading to hearing loss and tinnitus
schwannoma at the cerebellopontine angle
what CNS tumor has cells that are S-100 positive
schwannoma
what disease do you see bilateral schwannomas?
neurofibromatosis type II
what tumor has cells that have a “fried egg” appearance?
oligodendroglioma
how does the imagining of a pilocytic astrocytoma look
cystic lesion with a mural nodule
what are rosenthal fibers and what tumor are they seen in
thick eosinophilic processes of astrocytes
seen in pilocytic astrocytomas
where are the malignant cells in a medulloblastoma tumor derived from?
cerebellar neuroectoderm
what are “drop metastases” that are seen in medulloblastoma?
metastasis to the cauda equina
what tumor has characteristic “perivastcular pseudorosettes”
ependymoma seen in kids
