Primary CNS lymphoma in the cerebellopontine angle. Report of a case.

We report a case of primary CNS lymphoma that appeared as a cerebellopontine angle lesion, an initial observation not previously reported, to our knowledge. In general, primary CNS lymphoma remains localized to the CNS, with death occurring from localized recurrence. Radiation therapy after open biopsy is the treatment of choice, and achieves a good three-year outcome. However, five-year outcome with this treatment is poor.