Cisternography with metrizamide in cerebellopontine angle tumors

The technique and results of cerebello-pontine angle cisternography with metrizamide (Amipaque) in 34 patients are reported. Fourteen tumors were diagnosed. The internal auditory canal was normal in 19 patients, and in all of them the facial and statoacoustic nerves were visible. One examination was unsuccessful. No serious complications occurred. Headache was recorded in 76 per cent and transient EEG disturbance in 32 per cent of the patients.