Endoscopic Sinus Approaches versus Transcranial Anterior Petrosectomy: A Volumetric Comparative Study of Access to the Petrous Bone and the Petrous Apex

Objective: The petrous portion of the temporal bone (PB) and the petrous apex (PA) are complex regions in the skull base that are affected by many pathologies. Surgical approaches to access these structures all have limitations for achieving maximal tumor resection with minimal comorbidity.