Acoustic schwannoma

Case contributed by Dr Ahmed Abd Rabou

Presentation

Right side hearing impairment and tinnitus of 3 weeks duration.

Patient Data

Age: 40 years old
Gender: Male
MRI

Right cerebellopontine space occupying lesion exhibiting low signal on T1, high signal on T2 and FLAIR with avid enhancement on the post contrast study. There is also extension into the internal auditory canal (intracannilucular extension) and compression on the adjacent brain stem and 4th ventricle, with resultant of hydrocephalus more proximally. 

Case Discussion

Differential consideration of cerebellopontine angle lesions includes vestibular schwannoma, meningioma, epidermoid cyst and arachnoid cyst. Extension into the internal auditory canal favors the diagnosis of schwannoma over meningioma.

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Case information

rID: 25954
Case created: 17th Nov 2013
Last edited: 22nd Mar 2017
Inclusion in quiz mode: Included

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