Brain tumours Flashcards
T/F: The majority of adult tumours are infratentorial
false- most adult tumours supratentorial (most childhood infratentorial)
to remember: adults are taller than children
most common form of brain tumours?
metastases
T/F: metastatic brain tumours are often amenable to surgical intervention
false- often multiple and not treatable with surgical intervention
tumours that most commonly spread to the brain?
lung (most common) breast bowel skin (melanoma) kidney
most commonly primary tumour in adults?
glioblastoma multiforme
glioblastoma multiforme prognosis?
poor (around 1yr)
meningiomas are usually BENIGN/ MALIGNANT
benign
meningiomas arise from the ___ mater of the meninges
dura
cause symptoms by compression rather than invasion
a vestibular schwannoma (prev acoustic neuroma) is a BENIGN/ MALIGNANT tumour arising from CN __. Often seen in the ____ ____
Presents with what?
benign
8
cerebellopontine angle
hearing loss, facial nerve palsy (compression of nearby facial nerve), tinnitus
what genetic condition is associated with bilateral vestibular schwannomas.
NF 2
what is the most common primary brain tumour in children?
pilocytic astrocytoma
what is this:
an aggressive paediatric brain tumour that arises within the infratentorial compartment. It spreads through the CSF system.
medulloblastoma
Benign, slow-growing tumour common in the frontal lobes
Histology: Calcifications with ‘fried-egg’ appearance
oligodendroma
Pituitary adenomas may be divided into microadenomas (___)
1cm
compression of the optic chiasm e.g. due to pituitary adenoma will cause what visual defect
bitemporal hemianopia
