Cerebellopontine angle epidermoid tumor extending into the upper cervical spinal canal--case report.

A 61-year-old male with right facial pain and hearing loss was found to have a cerebellopontine angle epidermoid tumor that extended downward through the foramen magnum into the upper cervical spinal canal. The tumor was removed except for a small fragment of its capsule adherent to the brainstem. Only three such tumors with caudal extension have been reported.