Acoustic schwannoma (large with cystic change)

Case contributed by A.Prof Frank Gaillard

Presentation

Left sided hearing loss.

Left cerebellopontine angle extra axial mass with cystic components. It shows typical extension through the internal auditory meatus and displays avid enhancement in post contrast study

Case Discussion

MRI demonstrates typical findings of a large left sided acoustic schwannoma with cystic change - a common finding in larger schwannomas. 

The patient went on to have a resection. 

Histology

Microscopic Description:

Sections show a variably cellular tumour with compact areas of fascicular growth pattern and prominent nuclear palisading and less cellular regions composed of reticular cells in a microcystic pattern. There are sclerotic blood vessels, hemosiderin-laden macrophages and focal chronic inflammation.

Final Diagnosis:

Brain, left acoustic lesion: acoustic schwannoma.

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Case information

rID: 5369
Case created: 8th Jan 2009
Last edited: 1st Sep 2015
Inclusion in quiz mode: Included

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