Petrous bone cholesteatomas
Petrous bone cholesteatoma describes an epidermoid cyst affecting the petrous portion of the temporal bone.
It extends beyond the inner ear towards the center of the skull base. Clinical presentation of petrous bone cholesteatoma is not only variable but may be misleading. It can present as a middle ear cholesteatoma, progressive or sudden facial nerve palsy, sensorineural hearing loss or a conductive hearing loss, secretary otitis media or intracranial complication.