[100 microsurgical tumor excisions in the cerebellopontile angle with special reference to the preservation of hearing function].

A report is given on the experience gained in the microsurgical treatment of 100 tumours of the cerebellopontine angle - among them 78 neurinomas - under special consideration of the preservation of the audition. The advantages of the lateral suboccipital access in connection with the possibility to open the internal auditory meatus are pointed out. The problems regarding the treatment of bilateral neurinomas of the acusticus in Morbus Recklinghausen are discussed under a theoretical and a practical angle. Pre- and post-operative audition of the patients is subdivided according to the size and histology of the tumours.