Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
16 Cards in this Set
- Front
- Back
what is the most common tumor in males? in females?
|
males - gliomas
females - meningiomas |
|
what are the strongest prognostic factors when dealing with CNS tumors?
|
histological type
age |
|
What are the 3 subtypes of low grade astrocytoma?
|
fibrillary
protoplasmic gemistocytic |
|
what is the main symptom of low grade astrocytomas?
|
> 50% present with seizures
|
|
what age group would you see an anaplastic astrocytoma/glioblastoma multiforme tumor in?
|
older people; mean age is 60 y/o
|
|
what is the prognosis for anaplastic astrocytoma/ glioblastoma multiforme?
|
poor
AA- 3 years GBM - 1 year |
|
what age group is most likely to get a meningioma?
|
can arise in childhood but increased risk with increased age
|
|
what will determine the symptoms associated with a meningioma?
|
location of the tumor
|
|
what is the treatment for a meningioma?
|
surgical ressection most common
possibly gamma knife or radiation therapy |
|
What is the difference between a functioning and non-functioning pituitary adenoma?
|
funcitoning adenomas secrete hormones in excess of normal levels
|
|
what are the signs/symptoms of a pituitary adenoma?
|
endocrinologic disturbance
mass effect causes vision loss pituitary apoplexy |
|
why are pituitary adenomas not radiated?
|
cannot keep the radiation off of the optic nerve and will cause blindness
|
|
what is cushing's tirad?
|
widening of the pulse pressure
irregular respirations bradycardia |
|
where are tumors most likely to be found in the CNS in adults? children?
|
adults - supratentorial
children - infratentorial |
|
what is the overall mortality and morbidity rate for craniotomy for brain tumors?
|
10%
|
|
why is chemotherapy usually not a good choice of treatment of CNS tumors?
|
most chemotherapeutic agents have a large molecular weight which makes it hard for them to cross the BBB
|