Acoustic schwannoma

Case contributed by Dr Prashant Mudgal

Presentation

Young adult male presented with vertigo, tinnitus and cerebellar symptoms.

Patient Data

Age: 24 year
Gender: Male
MRI

Large well defined extra-axial heterogeneously enhancing mass in the left cerebellopontine angle with extension into the left internal auditory meatus with resultant widening.

The mass is heterogeneosly hypointense on T1W, hyperintense on T2W and FLAIR sequences.

Few tiny foci of blooming on gradient echo sequence suggestive of haemorrhage. 

Multiple non-enhancing cystic necrotic areas are seen within the tumour.

The lesion is compressing and displaceing the adjacent left cerebellar hemisphere, pons, medulla and fourth ventricle with CSF/vascular "cleft" (cleft sign).

No perilesional edema is seen.

Imaging findings are suggestive of acoustic schwannoma.

Case Discussion

Acoustic schwannoma is the most common cerebellopontine angle tumour.The most common presenting symptoms include; sensorineural hearing loss, tinnitus and vertigo. Contrast enhaced MRI is the investigation of choice for such lesions.

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Case information

rID: 26349
Case created: 15th Dec 2013
Last edited: 13th Apr 2016
Tag: pm
Inclusion in quiz mode: Included

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