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Ear, Nose And Throat Notes

Medicine Notes > Medicine and Surgery Pack Notes

This is an extract of our Ear, Nose And Throat document, which we sell as part of our Medicine and Surgery Pack Notes collection written by the top tier of Peninsula Medical School students.

The following is a more accessble plain text extract of the PDF sample above, taken from our Medicine and Surgery Pack Notes. Due to the challenges of extracting text from PDFs, it will have odd formatting:

EAR, NOSE AND THROAT Contents: Ear

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Acoustic Neuroma Otosclerosis Meniere's disease Presbyacusis

Nose

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Epistaxis Nasal polyps

Throat

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Infectious Mononucleosis

Ear ACOUSTIC NEUROMA Summary Points

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Acoustic neuroma is an uncommon benign tumour of the vestibulocochlear nerve

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It presents with a sensorineural hearing loss that is usually unilateral

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It is diagnosed by an MRI scan

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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:

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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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