Answers:
What is the best study to diagnose a vestibular schwannoma.
A) MRI w/o contrast
B) MRI w/ contrast
C) CT w/ contrast
D) CT w/o contrast
E) Angiogram
The gold standard for VS diagnosis is MRI w/ gadolinium contrast
What is the definition of "rollover"?
Rollover = Retrocochlear
pathology causes WRS to be lower than expected based on pure-tones. Often this WRS gets worse with increasing intensity of sound.
MC Questions:
What is the average growth rate of vestibular schwannomas?
A) 0.5 mm/yr
B) 1mm/yr
C) 1.2 mm/yr
D) 1.5 mm/yr
E) 1.8mm/yr
A) MRI w/o contrast
B) MRI w/ contrast
C) CT w/ contrast
D) CT w/o contrast
E) Angiogram
The gold standard for VS diagnosis is MRI w/ gadolinium contrast
What is the definition of "rollover"?
Rollover = Retrocochlear
pathology causes WRS to be lower than expected based on pure-tones. Often this WRS gets worse with increasing intensity of sound.
What is the average growth rate of vestibular schwannomas?
A) 0.5 mm/yr
B) 1mm/yr
C) 1.2 mm/yr
D) 1.5 mm/yr
E) 1.8mm/yr
Free Response Question:
Typically, how large must a CPA tumor be to cause cerebellar symptoms?
Quick Facts:
Surgical Measures for vestibular schwannomas
-Approach is based on hearing status, size of tumor and extent of IAC
involvement.
-Can be hearing preserving(retrosigmoid/middle fossa) or ablative
(translabyrinthine).
-Middle fossa = good hearing pt and tumor <1.5cm in CPA.
-Retrosigmoid = good hearing pt w/ tumor <4 cm not involving lateral IAC.
Typically, how large must a CPA tumor be to cause cerebellar symptoms?
Quick Facts:
Surgical Measures for vestibular schwannomas
-Approach is based on hearing status, size of tumor and extent of IAC
involvement.
-Can be hearing preserving(retrosigmoid/middle fossa) or ablative
(translabyrinthine).
-Middle fossa = good hearing pt and tumor <1.5cm in CPA.
-Retrosigmoid = good hearing pt w/ tumor <4 cm not involving lateral IAC.
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