Acoustic Neuroma Flashcards
What is vestibular schwannoma also known as?
Vestibular schwannoma is sometimes referred to as acoustic neuroma.
What percentage of intracranial tumors do vestibular schwannomas account for?
Vestibular schwannomas account for approximately 5% of intracranial tumors.
What percentage of cerebellopontine angle tumors are vestibular schwannomas?
Vestibular schwannomas account for 90% of cerebellopontine angle tumors.
What are the classical symptoms of vestibular schwannoma?
The classical symptoms include vertigo, hearing loss, tinnitus, and an absent corneal reflex.
Which cranial nerve is associated with vertigo and unilateral hearing loss in vestibular schwannoma?
Cranial nerve VIII is associated with vertigo, unilateral sensorineural hearing loss, and unilateral tinnitus.
Which cranial nerve is associated with an absent corneal reflex?
Cranial nerve V is associated with an absent corneal reflex.
Which cranial nerve is associated with facial palsy?
Cranial nerve VII is associated with facial palsy.
In which condition are bilateral vestibular schwannomas seen?
Bilateral vestibular schwannomas are seen in neurofibromatosis type 2.
What should patients with suspected vestibular schwannoma be referred for?
Patients with a suspected vestibular schwannoma should be referred urgently to ENT.
What is the nature of vestibular schwannomas?
Vestibular schwannomas are often slow growing, benign, and often observed initially.
What is the investigation of choice for vestibular schwannoma?
MRI of the cerebellopontine angle is the investigation of choice.
Why is audiometry important in the evaluation of vestibular schwannoma?
Audiometry is important as only 5% of patients will have a normal audiogram.
What are the management options for vestibular schwannoma?
Management options include surgery, radiotherapy, or observation.
