The authors describe the translabyrinthine approach to the pontocerebellar angle - trepanation and intracranial stage. As a basis they use topographic-anatomical studies and surgical practice comprising 38 operations. They emphasize perfect knowledge of the topographic anatomy of the temporal bone for achieving an adequate approach, for overcoming the barrier of the dura mater in the posterior fossa and for mastering the otoneurosurgical technique in the intracranial stage, which is also described in detail.

        Key words: translabyrinthine approach, topography, surgical technique, neurinoma of the