Acoustic schwannoma and epidermoid cyst occurring as a single cerebellopontine angle mass.

Goodman, R R; Torres, R A; McMurtry, J G · Neurosurgery · 1991

case_report · Level V

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Abstract

The case of a 66-year-old man with a 3-year progressive hearing loss and a homogeneous left cerebellopontine angle mass on magnetic resonance imaging scan is described. At surgery, the major portion of the mass was a typical encapsulated, solid, acoustic schwannoma, but the most rostral portion was a distinct, flaky, cystic mass without a well-defined capsule, typical of an epidermoid cyst. The radiographic and operative findings of this unique coexistence of two different benign cerebellopontine angle masses are presented.

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