90% of corner tumors are acoustic neuromas and meningioma
Symptoms occur with the involvement of neurovascular structures located in the corner.
CN 5-6-7-8-9-10-11 is related to compression. CN 12 is not affected
Symptoms (Cerebellopontine angle syndrome)
Unilateral sensorineural hearing loss
tinnitus
Vertigo, imbalance
Facial pain, facial paralysis
dysphagia
diplopia
Schwannum of the vestibulocochlear nerve (acoustic neuroma)
The vestibular nerve arises from Schwann cells
Most common angle tumor
95% sporadic cases, 5% neurofibromatosis type 2
Often bilateral in patients with NF type 2
Histologically Anthony A and Anthony B
Well wrapped. Has a slow growth pattern that continues for years
The primary symptoms are hearing loss and unilateral tinnitus
Prosthetic vertigo is less common because it grows slowly
The gold standard for diagnosis is MRI with gadolinium
Follow-up treatment, surgery, radiotherapy
note
Unilateral neurogenic hearing loss + tinnitus is considered an acoustic neuroma until proven otherwise
Magnetic resonance imaging with gadolinium should be requested
Symptoms occur with the involvement of neurovascular structures located in the corner.
CN 5-6-7-8-9-10-11 is related to compression. CN 12 is not affected
Symptoms (Cerebellopontine angle syndrome)
Unilateral sensorineural hearing loss
tinnitus
Vertigo, imbalance
Facial pain, facial paralysis
dysphagia
diplopia
Schwannum of the vestibulocochlear nerve (acoustic neuroma)
The vestibular nerve arises from Schwann cells
Most common angle tumor
95% sporadic cases, 5% neurofibromatosis type 2
Often bilateral in patients with NF type 2
Histologically Anthony A and Anthony B
Well wrapped. Has a slow growth pattern that continues for years
The primary symptoms are hearing loss and unilateral tinnitus
Prosthetic vertigo is less common because it grows slowly
The gold standard for diagnosis is MRI with gadolinium
Follow-up treatment, surgery, radiotherapy
note
Unilateral neurogenic hearing loss + tinnitus is considered an acoustic neuroma until proven otherwise
Magnetic resonance imaging with gadolinium should be requested