Ear Problems Flashcards
what is a cholesteatoma?
presence of keratin in the middle ear
complications in cholesteatoma
keratin contains enzymes that erode surrounding bone and bacteria can grow
causes of cholesteatoma
acquired
congenital
diagnosis of cholesteatoma
pearly white on otoscopy with foul, cheesy discharge
management of cholesteatoma
surgical excision
reconstruction
what is otosclerosis?
abnormal bone formation fixing the footplate of stapes to the oval window
who is otosclerosis more common in?
women during pregnancy due to oestrogen
presentation of otosclerosis
gradual onset of CHL
diagnosis of otosclerosis
PTA with Cahart’s notch at 2kHz
management of otosclerosis
stapedectomy
hearing aids
where is a vestibular schwannoma usually found?
posterior fossa in cerebellum-pontine angle
what is a vestibular schwannoma?
benign tumour of the CNVIII nerve sheath that can extend to internal auditory meatus
presentation of vestibular schwannoma
asymmetrical hearing loss with tinnitus
imbalance without vertigo as slow growing
diagnosis of vestibular schwannoma
loss of corneal reflex + SNHL, vertigo and tinnitus
MRI
what condition is vestibular schwannoma associated with?
NF2
