Abstract
We experienced a rare case of metastatic cerebellopontine (CP) angle tumor, originating from a renal cell carcinoma with hearing impairment. A 61-year-old male was admitted to our hospital complaining of sudden hearing impairment of the left ear. He had been well for six years, after a diagnosis of left renal cell carcinoma two years previously, with lung metastasis and brain metastases in the frontal lobe. Brain tumors had been removed twice. Magnetic resonance imaging (MRI) of the head showed a new lesion at the CP angle with recurrence of the left metastatic tumors.Hearing impairment was achieved by the administration of corticosteroid. The patient showed loss of II -V waves on left ABR, and optokinetic nystagmus test depression on the counterclockwise. Hearing impairment and dizziness progressively worsened during the subsequent two year period, but he was managed as an out-patient until March in 1998.
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