pathology of intra-cranial tumours Flashcards
SOL- space occupying lesion
haemorrhage, tumour, abscess
effects of the SOL
amount of tissue increases which raises intra-cranial pressure so brain shifts between intracranial spaces
squeezes on cortex and brainstem
morning headache and sickness
squeezes on optic nerve
causes papilloedema
what happens as pressure increases
papillary dilation- cranial nerve 3
GCS falls
brainstem death
where are tumours usually in adults
majority above tentorium
where are tumours usually in children
below tentoirum
where do meningiomas form from
arachnocytes which make up the covering of the brain
bengin and don’t metastasise but can invade the skull
slow-growing
acoustic neuroma
schwannoma effects 8th cranial nerve.
occurs at angle between pons and cerebellum
unilateral deafness
benign lesion but difficult to remove
pituitary adenoma
secretes pituitary hormones
grows on optic chiasma leading to vision problems