Cerebellopontine angle tumour

Published on 05/05/2015 by admin

Filed under Internal Medicine

Last modified 05/05/2015

Print this page

rate 1 star rate 2 star rate 3 star rate 4 star rate 5 star
Your rating: none, Average: 0 (0 votes)

This article have been viewed 954 times

82 Cerebellopontine angle tumour

Instruction

Examine this patient’s cranial nerves.

Salient features

Examination

• Damage to the seventh and eighth cranial nerves is the hallmark of this lesion in this region.

• Obtain a history of hearing loss and tinnitus.

Proceed as follows:

• Check the corneal reflex and test the trigeminal nerve (p. 156).

• Tell the examiner that you would like to look for the following:

• Cerebellar signs (p. 200)
• Signs of neurofibroma type 2 (p. 278)
• Papilloedema (seen uncommonly as a result of raised intracranial pressure).

Diagnosis

This patient has features of cerebellopontine angle tumour (lesion) usually caused by an acoustic neuroma (aetiology), and has severe hearing loss (functional status).

Advanced-level questions

Mention a few causes of cerebellopontine angle lesions

• Acoustic neuroma (now knowns as vestibular schwanommas) accounts for 70–80% of cerebellopontine angle tumours

• Meningioma, cholesteatoma, haemangioblastoma, aneurysm of the basilar artery

• Pontine glioma

• Medullablastoma and astrocytoma of the cerebellum

Buy Membership for Internal Medicine Category to continue reading. Learn more here

Related posts:

Default ThumbnailSixth cranial nerve palsy Osteoarthrosis Cataracts Ebstein’s anomaly Paget’s disease Erythema nodosum