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NU 407 Neuro starting at Brain Tumors -> end

Terms in this set (234)

With brain tumors, all are either primary or secondary origin. What is the difference?
Primary: originated in the brain
Secondary: tumor occurred somewhere else then metastasized to brain
Primary brain tumors rarely....
metastasize outside of the CNS
- bc of BBB
What are the two most common places that secondary brain tumors come from?
Lung and breast
Which is more common, primary or secondary brain tumors?
secondary
What are the different ways that brain tumors are classified as?
- Histological Origin
- Anatomical Location
- Benign vs Malignant
There are 4 major types of brain cancers based on their histologial origin. What are they?
- Glioma (from glioblasts)
- Meningioma (from meninge layer)
- Neuroma (schwannoma) - (from Schwann cells)
- Adenoma (from glandular tissue)
What ist he most aggressive brain cancer?
Glioblastoma
Describe the type of tumor a Glioblastoma is
- Very poorly differentiated
- Finger-like invasiveness, cannot be surgically remove
- Most aggressive & worst prognosis
Survival with a glioblastoma after is rare after how long?
1-2 years
What ages is glioblastoma most common in?
children 2-12 yrs and adults 40-60
Describe a meningioma
- Most common type
- Grows slowly
- Compresses the brain, rather than invading the brain
- Usually benign
- Prognosis generally good when in a surgically accessible location
What is the most common type of brain cancer?
Meningioma
What is a Schwann cell?
Glial cells that provide the myelin sheath
Describe a neuroma (schwannoma)
- Non-invasive
- Slow growing
- Usually benign
One type of brain cancer is a neuroma (schwannoma). What is the most common type of neuroma? What are symptoms of it?
Acoustic neuroma
- neuroma affecting myelin sheath of CN 8 (acoustic)
- S&S: dizziness, balance problems, unilateral hearing loss
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