“…Craniometaphyseal dysplasia and Camurati-Engelmann disease (progressive diaphyseal dysplasia) are two such examples that may necessitate internal auditory canal decompression due to seventh and eighth cranial nerve deficits. 24,25 Compressive effects may also be noted on other skull base foramina, cranial nerves, vessels, and brain stem. In these patients, internal auditory canal decompression is performed through the MCF approach to remove the superior and the anterior portions of the petrous bone.…”