Left sided sensory neural hearing loss.
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An enhancing, somewhat T2 hyperintense vividly enhancing mass is present in the left cerebellopontine angle and extends into the acoustic meatus. Features are typical of an acoustic schwannoma.
The patient went on to have a retrosigmoid craniotomy and resection of the mass.
Sections show a benign spindle cell tumor displaying Antoni A and Antoni B areas, and focal Verocay body formation, typical of an acoustic schwannoma.