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Ear, Nose And Throat Notes

This is a sample of our (approximately) 22 page long Ear, Nose And Throat notes, which we sell as part of the Medicine and Surgery Notes collection, a === Other === package written at Peninsula Medical School in 2011 that contains (approximately) 121 pages of notes across 6 different documents.

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EAR, NOSE AND THROAT Contents: Ear

Acoustic Neuroma Otosclerosis Ménière's disease Presbyacusis

Nose

Epistaxis Nasal polyps

Throat

Infectious Mononucleosis

Ear ACOUSTIC NEUROMA Summary Points


Acoustic neuroma is an uncommon benign tumour of the vestibulocochlear nerve


It presents with a sensorineural hearing loss that is usually unilateral


It is diagnosed by an MRI scan


It is treated conservatively or surgically depending on the size of the tumour and its clinical manifestation Aetiology and Pathophysiology Benign tumours of vestibulocochlear nerve (CNVIII), usually of Schwann cells covering vestibular portion. Slow-growing benign lesions. They cause local pressure and are a space-occupying lesion. They make up 5-10% of all intracranial tumours. Epidemiology and Associated Risk Factors Incidence 13/1,000,000 - most go undiagnosed Risk factors:

Neurofibromatosis II (autosomal dominant) High-dose ionising radiation Hayfever - unconfirmed association Occupational noise exposure - unconfirmed association

Presentation Any unilateral sensorineural hearing loss is an acoustic neuroma until proven otherwise Progressive unilateral (ipsilateral) sensorineural hearing loss (90%) +/- tinnitus (70%) (Pts w/ Neurofibromatosis II may have bilateral tumours) - may fluctuate Vertigo uncommon, may be unsteady - common Trigeminal compression -> Impaired facial sensation Giddiness common. Large tumours -> headaches, visual disturbance, and ataxia Very large tumours -> facial paralysis (rare)

Assessment
- O/E -

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