Functional Petrosectomy Via a Suboccipital Retrosigmoid Approach: Guidelines and Topography

摘要

OBJECTIVE: Recent reports have validated the use of retrosigmoid approach extensions to deal with posterior fossa lesions extending laterally extracranially or superiorly into the petroclival areas. The purpose of our research is to describe the topographic retrosiginoid anatomy of the petrous pyramid and provide guidelines for neurovascular sparing drilling (hence for a functional petrosectomy), via this surgical route.