[An unusual canal in the apical part of a petrous bone--an emissary canal for the superior petrosus sinus?].

Abstract

A bone canal was found in the apical part of a Pars petrosa, connecting the Sinus petrosus superior and the "Foramen petrobasilare", which is a Foramen emissarium of the Sinus petrosus inferior. This canal was interpreted as a Canalis emissarius of the Sinus petrosus superior.